IEC 60335-2-96:2002

Household and similar electrical appliances - Safety - Part 2-96: Particular requirements for flexible sheet heating elements for room heating

Deals with the safety of flexible sheet heating elements. These are incorporated into a building to heat rooms. The rated voltage is less than 250 V for single-phase installations and 480 V for other installations. For heated blankets and pads, see IEC 60335-2-17. For heated mats and foot warmers, see IEC 60335-2-81. This standard does not cover under-carpet heaters, nor flexible heating elements incorporated in other appliances.

Appareils électrodomestiques et analogues - Sécurité - Partie 2-96: Règles particulières pour les films souples chauffants pour le chauffage des locaux

Traite de la sécurité des films souples chauffants. Ils sont destinés à être intégrés au bâti afin de chauffer des salles. La tension assignée ne dépasse pas 250 V pour les installations monophasées et 480 V pour les autres installations. Pour les couvertures et coussins chauffants, voir la CEI 60335-2-17. Pour les chancelières et carpettes chauffantes électriques, voir la CEI 60335-2-81. Cette norme ne couvre pas ni les appareils chauffants sous un tapis, ni les éléments chauffants souples intégres dans d'autres appareils.

General Information

• Status: Published
• Publication Date: 17-Feb-2002
• ICS: 13.120 - Domestic safety
• ICS: 97.100.10 - Electric heaters
• Technical Committee: TC 61 - Safety of household and similar electrical appliances
• Current Stage: DELPUB - Deleted Publication
• Start Date: 17-May-2019
• Completion Date: 10-Nov-2017

Relations

• Amended By: IEC 60335-2-96:2002/AMD2:2008 - Amendment 2 - Household and similar electrical appliances - Safety - Part 2-96: Particular requirements for flexible sheet heating elements for room heating
• Effective Date: 05-Sep-2023
• Amended By: IEC 60335-2-96:2002/AMD1:2003 - Amendment 1 - Household and similar electrical appliances - Safety - Part 2-96: Particular requirements for flexible sheet heating elements for room heating
• Effective Date: 05-Sep-2023
• Corrected By: IEC 60335-2-96:2002/COR1:2003 - Corrigendum 1 - Household and similar electrical appliances - Safety - Part 2-96: Particular requirements for flexible sheet heating elements for room heating
• Effective Date: 05-Sep-2023
• Revised: IEC 60335-2-96:2019 - Household and similar electrical appliances - Safety - Part 2-96: Particular requirements for flexible sheet heating elements for room heating
• Effective Date: 05-Sep-2023

Overview

IEC 60335-2-96:2002 is a key international standard addressing the safety requirements for flexible sheet heating elements used for room heating within households and similar environments. Published by the International Electrotechnical Commission (IEC), this standard specifically focuses on flexible heating elements incorporated into building structures, ensuring safe operation under rated voltages less than 250 V for single-phase and up to 480 V for other installations. It excludes applications such as heated blankets, mats, foot warmers, and under-carpet heaters, which are covered by other IEC standards.

This standard complements the general safety requirements outlined in IEC 60335-1 and provides particular provisions tailored to the unique characteristics of flexible sheet heating elements, which are lightweight and adaptable heating solutions integrated into floors, walls, or ceilings to provide efficient ambient heating.

Key Topics

• Scope and Classification: Defines the types of flexible sheet heating elements covered, voltage ratings, and the installation environments. It excludes flexible heating incorporated in other appliances and specific devices like heated blankets or mats.

• Safety Requirements: Addresses protection against electric shock, mechanical hazards, and thermal risks. It mandates clear marking, user instructions, and protection against access to live parts.

• Testing Procedures: Details test methods for power input, overheating, leakage current, electrical strength, moisture resistance, and abnormal operating conditions to ensure reliability and consumer safety.

• Construction and Components: Specifies requirements for internal wiring, terminal connections, external cords, and provision for earthing (grounding) to maintain electrical integrity and safety throughout the product’s lifetime.

• Mechanical and Thermal Protection: Covers stability, mechanical strength, resistance to heat, fire, and rusting to assure durable performance in building-integrated heating systems.

• Installation Instructions: An informative annex guides proper installation practices, emphasizing safety during integration of flexible heating elements in timber or concrete floors and ceilings.

Applications

IEC 60335-2-96 is highly relevant for manufacturers, designers, installers, and safety testing laboratories involved with:

• Building integrated heating systems using flexible sheet heaters embedded in floors, walls, or ceilings for efficient room warming.

• Construction projects aiming to apply safe and standardized electric heating solutions that prevent fire hazards, electrical faults, and user injuries.

• Quality assurance processes within product development for manufacturers ensuring compliance with global safety norms.

• Regulatory compliance and certification testing for household electrical appliances intended for space heating applications.

By adhering to this standard, stakeholders can deliver reliable, energy-efficient heating solutions that align with international safety expectations, contributing to safer living environments and reducing the risk of electrical hazards.

Related Standards

• IEC 60335-1: General Safety Requirements for Household and Similar Electrical Appliances - forms the base standard which IEC 60335-2-96 supplements, providing overarching safety principles.

• IEC 60335-2-17: Particular Requirements for Heated Blankets and Pads - relevant where heating elements are incorporated in personal use textiles.

• IEC 60335-2-81: Particular Requirements for Heated Mats and Foot Warmers - covers specific applications excluded from IEC 60335-2-96 scope.

• National Variations: Some countries such as Germany, Israel, Canada, USA, and Sweden have specific adaptations related to installation restrictions and construction classes, which should be considered alongside the IEC standard.

Conclusion

IEC 60335-2-96:2002 provides a comprehensive framework for ensuring safety, performance, and reliability of flexible sheet heating elements for room heating. Adoption of this standard facilitates the development and integration of advanced electrical heating technologies while maintaining protection against electric shock, overheating, and mechanical damage. It also supports manufacturers and installers in meeting global market requirements and enhancing consumer confidence in electric heating solutions embedded in modern building designs.

For the latest editions, testing methods, and technical details, consult the IEC official resources at www.iec.ch.

Standards Content (Sample)

NORME CEI
INTERNATIONALE IEC
60335-2-96
INTERNATIONAL
Première édition
STANDARD
First edition
2002-02
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-96:
Règles particulières pour les films souples
chauffants pour le chauffage des locaux
Household and similar electrical appliances –
Safety –
Part 2-96:
Particular requirements for flexible sheet
heating elements for room heating

Numéro de référence
Reference number
CEI/IEC 60335-2-96:2002
Numérotation des publications Publication numbering

Depuis le 1er janvier 1997, les publications de la CEI As from 1 January 1997 all IEC publications are

sont numérotées à partir de 60000. Ainsi, la CEI 34-1 issued with a designation in the 60000 series. For
devient la CEI 60034-1. example, IEC 34-1 is now referred to as IEC 60034-1.

Editions consolidées Consolidated editions

Les versions consolidées de certaines publications de la The IEC is now publishing consolidated versions of its

CEI incorporant les amendements sont disponibles. Par publications. For example, edition numbers 1.0, 1.1

exemple, les numéros d’édition 1.0, 1.1 et 1.2 indiquent and 1.2 refer, respectively, to the base publication,
respectivement la publication de base, la publication de the base publication incorporating amendment 1 and

base incorporant l’amendement 1, et la publication de the base publication incorporating amendments 1
base incorporant les amendements 1 et 2. and 2.
Informations supplémentaires Further information on IEC publications
sur les publications de la CEI
Le contenu technique des publications de la CEI est The technical content of IEC publications is kept
constamment revu par la CEI afin qu'il reflète l'état under constant review by the IEC, thus ensuring that
actuel de la technique. Des renseignements relatifs à the content reflects current technology. Information
cette publication, y compris sa validité, sont dispo- relating to this publication, including its validity, is
nibles dans le Catalogue des publications de la CEI available in the IEC Catalogue of publications
(voir ci-dessous) en plus des nouvelles éditions, (see below) in addition to new editions, amendments
amendements et corrigenda. Des informations sur les and corrigenda. Information on the subjects under
sujets à l’étude et l’avancement des travaux entrepris consideration and work in progress undertaken by the
par le comité d’études qui a élaboré cette publication, technical committee which has prepared this
ainsi que la liste des publications parues, sont publication, as well as the list of publications issued,
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NORME CEI
INTERNATIONALE IEC
60335-2-96
INTERNATIONAL
Première édition
STANDARD
First edition
2002-02
Appareils électrodomestiques et analogues –
Sécurité –
Partie 2-96:
Règles particulières pour les films souples
chauffants pour le chauffage des locaux
Household and similar electrical appliances –
Safety –
Part 2-96:
Particular requirements for flexible sheet
heating elements for room heating

 IEC 2002 Droits de reproduction réservés  Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in
utilisée sous quelque forme que ce soit et par aucun procédé, any form or by any means, electronic or mechanical,
électronique ou mécanique, y compris la photocopie et les including photocopying and microfilm, without permission in
microfilms, sans l'accord écrit de l'éditeur. writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: [phone] e-mail: [e-mail] IEC web site http://www.iec.ch
CODE PRIX
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PRICE CODE
International Electrotechnical Commission
Pour prix, voir catalogue en vigueur
For price, see current catalogue

– 2 – 60335-2-96 © CEI:2002
SOMMAIRE
AVANT-PROPOS.6

INTRODUCTION.10

1 Domaine d'application .12

2 Références normatives.12

3 Définitions .14

4 Prescriptions générales .16

5 Conditions générales pour les essais .16
6 Classification.16
7 Marquage et instructions .18
8 Protection contre l’accès aux parties actives .26
9 Démarrage des appareils à moteur.26
10 Puissance et courant .26
11 Échauffements .26
12 Vacant.32
13 Courant de fuite et rigidité diélectrique à la température de régime .32
14 Surtension transitoire .34
15 Résistance à l’humidité.34
16 Courant de fuite et rigidité électrique .34
17 Protection contre la surcharge des transformateurs et des circuits associés.36
18 Endurance.36
19 Fonctionnement anormal .40
20 Stabilité et dangers mécaniques .42
21 Résistance mécanique .42
22 Construction .44
23 Conducteurs internes .48
24 Composants .48
25 Raccordement au réseau et câbles souples extérieurs .48
26 Bornes pour conducteurs externes .48

27 Disposition en vue de la mise à la terre .50
28 Vis et connexions .50
29 Lignes de fuite, distances dans l’air et distances à travers l’isolation .50
30 Résistance à la chaleur et au feu.50
31 Protection contre la rouille.52
32 Rayonnement, toxicité et dangers analogues.52
Annexes .66
Annexe AA (informative) Résumé des instructions d'installation.68
Bibliographie.70

60335-2-96 © IEC:2002 – 3 –
CONTENTS
FOREWORD.7

INTRODUCTION.11

1 Scope.13

2 Normative references .13

3 Definitions .15

4 General requirement.17

5 General conditions for the tests .17
6 Classification.17
7 Marking and instructions.19
8 Protection against access to live parts.27
9 Starting of motor-operated appliances .27
10 Power input and current.27
11 Heating.27
12 Void.33
13 Leakage current and electric strength at operating temperature.33
14 Transient overvoltages .35
15 Moisture resistance .35
16 Leakage current and electric strength.35
17 Overload protection of transformers and associated circuits .37
18 Endurance.37
19 Abnormal operation .41
20 Stability and mechanical hazards.43
21 Mechanical strength .43
22 Construction .45
23 Internal wiring.49
24 Components .49
25 Supply connection and external flexible cords .49
26 Terminals for external conductors.49

27 Provision for earthing .51
28 Screws and connections .51
29 Clearances, creepage distances and solid insulation .51
30 Resistance to heat and fire.51
31 Resistance to rusting.53
32 Radiation, toxicity and similar hazards.53
Annexes .67
Annex AA (informative) Summary of installation instructions .69
Bibliography.71

– 4 – 60335-2-96 © CEI:2002
Figure 101 – Dispositif pour l'essai des unités chauffantes dans les plafonds en bois .54

Figure 102 – Dispositif pour l'essai des unités chauffantes modulaires .56

Figure 103 – Dispositif pour l'essai des unités chauffantes dans les planchers en bois .58

Figure 104 – Dispositif pour l'essai des unités chauffantes dans les planchers en béton.60

Figure 105 – Dispositif pour l'essai des unités chauffantes dans les planchers et

plafonds en bois, combinés.62

Figure 106 – Gabarit pour loger l'aiguille de contact .64

Tableau 101 – Limites des échauffements des surfaces.32

60335-2-96 © IEC:2002 – 5 –
Figure 101 – Arrangement for testing heating units in timber ceilings .55

Figure 102 – Arrangement for testing modular heating units.57

Figure 103 – Arrangement for testing heating units in timber floors .59

Figure 104 – Arrangement for testing heating units in concrete floors.61

Figure 105 – Arrangement for testing heating units in timber floors and ceilings in

combination .63

Figure 106 – Jig for locating the contact needle .65

Table 101 – Temperature rise limits for surfaces .33

– 6 – 60335-2-96 © CEI:2002
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE

____________
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –

SÉCURITÉ –
Partie 2-96: Règles particulières pour les films souples chauffants

pour le chauffage des locaux
AVANT-PROPOS
1) La CEI (Commission Electrotechnique Internationale) est une organisation mondiale de normalisation
composée de l'ensemble des comités électrotechniques nationaux (Comités nationaux de la CEI). La CEI a
pour objet de favoriser la coopération internationale pour toutes les questions de normalisation dans les
domaines de l'électricité et de l'électronique. A cet effet, la CEI, entre autres activités, publie des Normes
internationales. Leur élaboration est confiée à des comités d'études, aux travaux desquels tout Comité national
intéressé par le sujet traité peut participer. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec la CEI, participent également aux travaux. La CEI collabore étroitement
avec l'Organisation Internationale de Normalisation (ISO), selon des conditions fixées par accord entre les
deux organisations.
2) Les décisions ou accords officiels de la CEI concernant les questions techniques représentent, dans la mesure
du possible un accord international sur les sujets étudiés, étant donné que les Comités nationaux intéressés
sont représentés dans chaque comité d’études.
3) Les documents produits se présentent sous la forme de recommandations internationales. Ils sont publiés
comme normes, spécifications techniques, rapports techniques ou guides et agréés comme tels par les
Comités nationaux.
4) Dans le but d'encourager l'unification internationale, les Comités nationaux de la CEI s'engagent à appliquer de
façon transparente, dans toute la mesure possible, les Normes internationales de la CEI dans leurs normes
nationales et régionales. Toute divergence entre la norme de la CEI et la norme nationale ou régionale
correspondante doit être indiquée en termes clairs dans cette dernière.
5) La CEI n’a fixé aucune procédure concernant le marquage comme indication d’approbation et sa responsabilité
n’est pas engagée quand un matériel est déclaré conforme à l’une de ses normes.
6) L’attention est attirée sur le fait que certains des éléments de la présente Norme internationale peuvent faire
l’objet de droits de propriété intellectuelle ou de droits analogues. La CEI ne saurait être tenue pour
responsable de ne pas avoir identifié de tels droits de propriété et de ne pas avoir signalé leur existence.
La présente partie de la Norme internationale CEI 60335 a été établie par le comité
d'études 61 de la CEI: Sécurité des appareils électrodomestiques et analogues.
Elle constitue la première édition de la CEI 60335-2-96.
Le texte de cette partie de la CEI 60335 est issu des documents suivants:
FDIS Rapport de vote
61/2088/FDIS 61/2105/RVD
Le rapport de vote indiqué dans le tableau ci-dessus donne toute information sur le vote ayant
abouti à l'approbation de cette norme.
La présente partie 2 doit être utilisée conjointement avec la dernière édition de la CEI 60335-1 et
ses amendements. Elle a été établie sur la base de la quatrième édition (2001) de cette norme.
NOTE 1 L’expression «Partie 1» utilisée dans la présente norme fait référence à la CEI 60335-1.
La présente partie 2 complète ou modifie les articles correspondants de la CEI 60335-1 de
façon à transformer cette publication en norme CEI: Règles de sécurité pour les films souples
chauffants électriques pour le chauffage des locaux.

60335-2-96 © IEC:2002 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION

___________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-96: Particular requirements for flexible sheet heating elements

for room heating
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the standards dealt with.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
This part of International Standard IEC 60335 has been prepared by IEC technical committee
61: Safety of household and similar electrical appliances.
It forms the first edition of IEC 60335-2-96.
The text of this part of IEC 60335 is based on the following documents:

FDIS Report on voting
61/2088/FDIS 61/2105/RVD
Full information on the voting for the approval of this standard can be found in the voting
report indicated in the above table.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fourth edition (2001) of that standard.
NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.
This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for electrical flexible sheet
heating elements for room heating.

– 8 – 60335-2-96 © CEI:2002
Lorsqu'un paragraphe particulier de la Partie 1 n'est pas mentionné dans cette partie 2,
ce paragraphe s'applique pour autant qu'il est raisonnable. Lorsque la présente norme

spécifie «addition», «modification» ou «remplacement», le texte correspondant de la Partie 1

doit être adapté en conséquence.

NOTE 2 Le système de numérotation suivant est utilisé:

− paragraphes, tableaux et figures: ceux qui sont numérotés à partir de 101 sont complémentaires à ceux de la

Partie 1;
− notes: à l’exception de celles qui sont dans un nouveau paragraphe ou de celles qui concernent des notes de

la Partie 1, les notes sont numérotées à partir de 101, y compris celles des articles ou paragraphes qui sont
modifiés ou remplacés;
− annexes: les annexes complémentaires sont appelées AA, BB, etc.
NOTE 3 Les caractères d'imprimerie suivants sont utilisés:
− prescriptions: caractères romains;
− modalités d'essais: caractères italiques;
− notes: petits caractères romains.
Les mots en gras dans le texte sont définis à l'article 3. Lorsqu'une définition concerne un adjectif, l'adjectif et le
nom associé figurent également en gras.
Le comité a décidé que le contenu de cette publication ne sera pas modifié avant 2003.
A cette date, la publication sera
• reconduite ;
• supprimée ;
• remplacée par une édition révisée, ou
• amendée.
Les différences complémentaires suivantes existent dans les pays indiqués ci-après.
− Article 1: Les films souples chauffants qui sont découpés sur le site ne sont pas autorisés (France, Allemagne
et Israël).
− 6.1: L'installation doit correspondre à une construction de classe II (Allemagne).
− 6.1: Les unités chauffantes doivent être de classe II (Israël).
− 7.1: L'installation prévue ne doit pas inclure les murs (Canada et USA).
− 7.12.1 c): Les instructions pour l'installation dans les planchers de planches en résineux doivent indiquer que
l'unité chauffante doit être couverte d'une isolation supplémentaire, munie d’un transformateur isolant, ou être
de classe II (Suède).
− 7.12.1 c): Les instructions relatives à l'installation ne nécessitent pas de se référer aux dispositifs de coupure
différentiels (USA).
− 7.12.101 a): La taille des bornes équipant la grille peut être inférieure (Canada).

− Article 18: Les essais sont différents (USA).
− 22.102: L'essai est différent (USA).
− 22.103: L'essai est différent (USA).
− 25.3: Il n'est pas permis aux unités chauffantes d'incorporer les cordons d'alimentation (Canada et USA).
Le contenu du corrigendum de mai 2003 a été pris en considération dans cet exemplaire.

60335-2-96 © IEC:2002 – 9 –
When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states "addition", "modification" or "replacement",

the relevant text of Part 1 is to be adapted accordingly.

NOTE 2 The following numbering system is used:

– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;

– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including

those in a replaced clause or subclause;

– additional annexes are lettered AA, BB, etc.

NOTE 3 The following print types are used:

– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
The committee has decided that the contents of this publication will remain unchanged
until 2003. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended
The following additional differences exist in the countries indicated below.
– Clause 1: Flexible sheet heating elements that are cut on site are not allowed (France, Germany and Israel).
– 6.1: The installation is to be of class II construction (Germany).
– 6.1: Heating units are to be class II (Israel).
– 7.1: The intended installation is not to include walls (Canada and USA).
– 7.12.1 c): The instructions in timber floors shall state that the heating unit is to be covered with additional
insulation, be supplied through an isolating transformer, or be class II (Sweden).
– 7.12.1 c): The instructions need not refer to residual current devices (USA).
– 7.12.101 a): The size of the terminals fitted to the grid may be smaller (Canada).
– Clause 18: The tests are different (USA).
– 22.102: The test is different (USA).
– 22.103: The test is different (USA).
– 25.3: Heating units are not allowed to incorporate supply cords (Canada and USA).
The contents of the corrigendum of May 2003 have been included in this copy.

– 10 – 60335-2-96 © CEI:2002
INTRODUCTION
Il a été considéré en établissant la présente Norme internationale que l'exécution de ses dis-

positions était confiée à des personnes expérimentées et ayant une qualification appropriée.

Cette norme reconnaît le niveau de protection internationalement accepté contre les risques

électriques, mécaniques, thermiques, liés au feu et au rayonnement des appareils, lorsqu'ils

fonctionnent comme en usage normal en tenant compte des instructions du fabricant. Elle

couvre également les situations anormales auxquelles on peut s'attendre dans la pratique.

Cette norme tient compte autant que possible des prescriptions de la CEI 60364, de façon à

rester compatible avec les règles d'installation quand l’appareil est raccordé au réseau
d’alimentation. Cependant, des règles nationales d'installation peuvent être différentes.
Si un appareil compris dans le domaine d’application de cette norme comporte également des
fonctions qui sont couvertes par une autre partie 2 de la CEI 60335, la partie 2
correspondante est appliquée à chaque fonction séparément, dans la limite du raisonnable. Si
cela est applicable, on tient compte de l’influence d’une fonction sur les autres fonctions.
Cette norme est une norme de famille de produits traitant de la sécurité d’appareils et a
préséance sur les normes horizontales et génériques couvrant le même sujet.
Un appareil conforme au texte de la présente norme ne sera pas nécessairement jugé
conforme aux principes de sécurité de la norme si, lorsqu'il est examiné et soumis aux essais,
il apparaît qu'il présente d'autres caractéristiques qui compromettent le niveau de sécurité
visé par ces prescriptions.
Un appareil utilisant des matériaux ou présentant des modes de construction différents de
ceux décrits dans les prescriptions de cette norme peut être examiné et essayé en fonction de
l'objectif poursuivi par ces prescriptions et, s'il est jugé pratiquement équivalent, il peut être
estimé conforme aux principes de sécurité de la norme.

60335-2-96 © IEC:2002 – 11 –
INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its

provisions is entrusted to appropriately qualified and experienced persons.

This standard recognizes the internationally accepted level of protection against hazards such

as electrical, mechanical, thermal, fire and radiation of appliances when operated as in

normal use taking into account the manufacturer's instructions. It also covers abnormal

situations that can be expected in practice.

This standard takes into account the requirements of IEC 60364 as far as possible so that

there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features which impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
– 12 – 60335-2-96 © CEI:2002
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –

SÉCURITÉ
Partie 2-96: Règles particulières pour les films souples chauffants

pour le chauffage des locaux
1 Domaine d'application
L'article de la Partie 1 est remplacé par l’article ci-après.
La présente Norme internationale traite de la sécurité des films souples chauffants destinés
à être intégrés au bâti afin de chauffer la salle dans laquelle ils sont situés, leur tension
assignée ne dépassant pas 250 V pour les installations monophasées et 480 V pour les
autres installations.
Les films souples chauffants sont convertis en unités chauffantes qui sont intégrées au
bâti conformément aux instructions relatives à l'installation après laquelle le niveau de
protection contre les risques est atteint.
NOTE 101 L’attention est attirée sur le fait que
− dans de nombreux pays, différentes règles de câblage s'appliquent;
− pour les unités chauffantes destinées à être utilisées dans les véhicules ou à bord des bateaux, des
prescriptions complémentaires peuvent être nécessaires;
− dans de nombreux pays, des prescriptions complémentaires sont spécifiées par les organismes nationaux
responsables de la protection anti-incendie, par les organismes nationaux responsables de la réglementation
des constructions, par les organisemes nationaux de la santé, par les organismes nationaux responsables de
la protection des travailleurs et par des organismes similaires.
NOTE 102 La présente norme ne s'applique pas
− aux unités chauffantes prévues exclusivement pour des usages industriels;
− aux unités chauffantes destinées à être utilisées dans des locaux présentant des conditions particulières,
telles que la présence d'une atmosphère corrosive ou explosive (poussière, vapeur ou gaz);
− aux couvertures, coussins et appareils chauffants souples analogues (CEI 60335-2-17);
− aux chancelières et carpettes chauffantes électriques (CEI 60335-2-81);
− aux appareils chauffants destinés à être utilisés sous un tapis;
− aux éléments chauffants souples intégrés dans d'autres appareils.
2 Références normatives
L’article de la Partie 1 est applicable avec les exceptions suivantes.
Addition:
CEI 60364-7-701, Installations électriques des bâtiments – Septième partie: Règles pour les
installations et emplacements spéciaux – Section 701: Locaux contenant une baignoire ou
une douche
CEI 60884-1:1995, Prises de courant pour usages domestiques et analogues – Partie 1:
Règles générales
60335-2-96 © IEC:2002 – 13 –
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-96: Particular requirements for flexible sheet heating elements

for room heating
1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of flexible sheet heating elements intended
to be incorporated into the building to heat the room in which they are located, their rated
voltage being not more than 250 V for single-phase installations and 480 V for other
installations.
Flexible sheet heating elements are converted into heating units that are incorporated in
the building in accordance with the instructions after which the required level of protection
against hazards is achieved.
NOTE 101 Attention is drawn to the fact that
– in many countries different wiring rules apply;
–for heating units intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries additional requirements are specified by the national authorities for fire protection, the
national authorities for building regulations, the national health authorities, the national authorities responsible
for the protection of labour and similar authorities.
NOTE 102 This standard does not apply to
– heating units intended exclusively for industrial purposes;
– heating units intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas);
– blankets, pads and similar flexible heating appliances (IEC 60335-2-17);
– heated mats and foot warmers (IEC 60335-2-81);
– heating appliances intended to be used under a carpet;
– flexible heating elements incorporated in other appliances.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60364-7-701, Electrical installations of buildings – Part 7: Requirements for special
installations or locations – Section 701: Electrical installations in bathrooms
IEC 60884-1:1995, Plugs and socket-outlets for household and similar purposes – Part 1:
General requirements
– 14 – 60335-2-96 © CEI:2002
3 Définitions
L’article de la Partie 1 est applicable avec les exceptions suivantes.

3.1.9 Remplacement:
conditions de fonctionnement normal

fonctionnement de l'unité chauffante après intégration dans le bâtiment conformément aux

instructions relatives à l'installation

Les films souples chauffants dont le courant peut varier en fonction de la longueur de

l'élément chauffant et ceux qui peuvent alimenter d’autres films souples chauffants sont
chargés de sorte que le courant marqué sur l'élément chauffant circule à travers l'unité
chauffante
Les unités chauffantes pour les applications de chauffage à accumulation sont chargées
pour 75 % de la durée de charge assignée.
3.5.4 Addition:
Les unités chauffantes sont considérées comme des appareils fixes.
3.101
film souple chauffant
élément chauffant composé de feuilles de matériau électriquement isolant laminées avec un
matériau électriquement résistant ou un matériau de base sur lequel sont fixés des conduc-
teurs chauffants isolés électriquement
NOTE Cette définition n’exclut pas d’autres méthodes d’association des matériaux isolants et résistants.
3.102
unité chauffante
film souple chauffant pourvu de moyens de connexion à l’alimentation, y compris l’isolant
entourant les parties actives
NOTE L'unité chauffante peut être partiellement ou complètement préfabriquée.
3.103
unité chauffante modulaire
assemblage préfabriqué constitué d'une unité chauffante et d'autres matériaux pour former
une construction rigide pour le montage sur un plafond
3.104
chauffage à accumulation
utilisation d'unités chauffantes pour chauffer un matériau accumulant la chaleur
NOTE La chaleur est ultérieurement restituée par convection naturelle, la quantité de chaleur restituée étant
modifiée par variation de l’énergie accumulée.
3.105
durée de charge assignée
la plus longue durée de la charge ininterrompue, attribuée à l’unité chauffante par le
fabricant
3.106
électrode
partie conductrice incorporée dans un film souple chauffant pour alimenter le matériau
chauffant
60335-2-96 © IEC:2002 – 15 –
3 Definitions
This clause of Part 1 is applicable except as follows.

3.1.9 Replacement:
normal operation
operation of the heating unit after incorporation into the building in accordance with the

instructions.
Flexible sheet heating elements, the current of which can vary depending on the length of
the heating element and those that can supply other flexible sheet heating elements are
loaded so that the current marked on the heating element flows through the heating unit.
Heating units for storage heating applications are charged for 75 % of the rated charging
period.
3.5.4 Addition:
Heating units are considered to be fixed appliances.
3.101
flexible sheet heating element
heating element consisting of sheets of electrical insulation laminated with electrical
resistance material, or a base material on which electrically insulated heating wires are fixed
NOTE This definition does not preclude other methods of combining the insulation and resistance materials.
3.102
heating unit
flexible sheet heating element equipped with means of connection to the supply and with
insulation surrounding live parts
NOTE The heating unit can be partly or completely prefabricated.
3.103
modular heating unit
prefabricated assembly consisting of a heating unit and other materials to form a rigid
construction for mounting on a ceiling
3.104
storage heating application
use of heating units to heat thermal accumulating material

NOTE The heat is discharged naturally, the heat output being varied by adjusting the energy input.
3.105
rated charging period
longest uninterrupted charging period assigned to the heating unit by the manufacturer
3.106
electrode
conductive part incorporated in a flexible sheet heating element for supplying the heating
material
– 16 – 60335-2-96 © CEI:2002
4 Prescriptions générales
L’article de la Partie 1 est applicable.

5 Conditions générales pour les essais

L’article de la Partie 1 est applicable avec les exceptions suivantes.

5.2 Remplacement:
En général, huit échantillons sont requis pour les essais.
Les essais du paragraphe 13.3 et des articles 15 et 16 sont effectués sur un échantillon.
Les essais décrits en 18.101 et à l'article 30 sont effectués sur un échantillon.
L'essai décrit en 21.102 est effectué sur deux échantillons. L'un de ces échantillons est
également utilisé pour l'essai décrit en 22.101.
L'essai décrit en 22.103 est effectué sur un échantillon.
Les essais restants sont effectués sur le sixième échantillon. Les deux autres échantillons
sont requis pour l'incorporation dans le dispositif d'essai pour créer l'environnement
thermique nécessaire.
NOTE 101 Les échantillons additionnels peuvent être nécessaires si les essais doivent être répétés.
Neuf échantillons d'unités chauffantes modulaires sont nécessaires pour les essais de 11.2.102.
Des échantillons additionnels sont nécessaires si les essais de 18.102 sont effectués.
Des échantillons additionnels peuvent être nécessaires pour les essais de différentes tailles d'unités chauffantes.
5.6 Addition:
Les thermostats sensibles à la température ambiante ou à la température extérieure sont
court-circuités. Toutefois, si le thermostat peut être réglé de façon telle qu’il ne cycle pas, il
n’est pas court-circuité, sauf spécification contraire.
NOTE 101 Pour les dispositifs de commande électroniques, il peut être nécessaire de rendre les éléments
sensibles inopérants au lieu de court-circuiter le thermostat.

5.10 Addition:
Cependant, pour les films souples chauffants qui sont découpés sur le site, les essais sont
effectués après raccordement des conducteurs d'alimentations et après avoir protégé les
bords selon les instructions.
6 Classification
L’article de la Partie 1 est applicable avec les exceptions suivantes.
6.1 Addition:
Les unités chauffantes ne sont pas nécessairement classées. Cependant, si une unité
chauffante est classée, les prescriptions correspondantes s’appliquent.

60335-2-96 © IEC:2002 – 17 –
4 General requirement
This clause of Part 1 is applicable.

5 General conditions for the tests

This clause of Part 1 is applicable except as follows.

5.2 Replacement:
In general, eight samples are required for the tests.
The tests of 13.3 and of Clauses 15 and 16 are carried out on one sample.
The tests of 18.101 and of Clause 30 are carried out on one sample.
The test of 21.102 is carried out on two samples. One of these samples is also used for the
test of 22.101.
The test of 22.103 is carried out on one sample.
The remaining tests are carried out on the sixth sample. The other two samples are required
for incorporating into the test arrangement to create
...

IEC 60335-2-96
Edition 1.1 2005-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-96: Particular requirements for flexible sheet heating elements for room
heating
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-96: Règles particulières pour les films souples chauffants pour le
chauffage des locaux
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IEC 60335-2-96
Edition 1.1 2005-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-96: Particular requirements for flexible sheet heating elements for room
heating
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-96: Règles particulières pour les films souples chauffants pour le
chauffage des locaux
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CN
CODE PRIX
ICS 13.120; 97.100.10 ISBN 2-8318-8146-3

– 2 – 60335-2-96 © CEI:2002+A1:2003

SOMMAIRE
AVANT-PROPOS.6

INTRODUCTION.10

1 Domaine d'application .12

2 Références normatives.12

3 Définitions .14

4 Prescriptions générales .16

5 Conditions générales pour les essais .16
6 Classification.18
7 Marquage et instructions .18
8 Protection contre l’accès aux parties actives .28
9 Démarrage des appareils à moteur.28
10 Puissance et courant .28
11 Échauffements .28
12 Vacant.34
13 Courant de fuite et rigidité diélectrique à la température de régime .34
14 Surtension transitoire .36
15 Résistance à l’humidité.36
16 Courant de fuite et rigidité diélectrique .36
17 Protection contre la surcharge des transformateurs et des circuits associés.38
18 Endurance.38
19 Fonctionnement anormal .44
20 Stabilité et dangers mécaniques .44
21 Résistance mécanique .44
22 Construction .48
23 Conducteurs internes .52
24 Composants .52
25 Raccordement au réseau et câbles souples extérieurs .52
26 Bornes pour conducteurs externes .54

27 Disposition en vue de la mise à la terre .54
28 Vis et connexions .54
29 Lignes de fuite, distances dans l’air et distances à travers l’isolation .54
30 Résistance à la chaleur et au feu.56
31 Protection contre la rouille.56
32 Rayonnement, toxicité et dangers analogues.56

Annexes .76

Annexe AA (informative) Résumé des instructions d'installation .78

Bibliographie.80

60335-2-96 © IEC:2002+A1:2003 – 3 –

CONTENTS
FOREWORD.7

INTRODUCTION.11

1 Scope.13

2 Normative references .13

3 Definitions .15

4 General requirement.17

5 General conditions for the tests .17
6 Classification.19
7 Marking and instructions.19
8 Protection against access to live parts.29
9 Starting of motor-operated appliances .29
10 Power input and current .29
11 Heating .29
12 Void.35
13 Leakage current and electric strength at operating temperature.35
14 Transient overvoltages .37
15 Moisture resistance .37
16 Leakage current and electric strength.37
17 Overload protection of transformers and associated circuits .39
18 Endurance.39
19 Abnormal operation .45
20 Stability and mechanical hazards .45
21 Mechanical strength .45
22 Construction .49
23 Internal wiring.53
24 Components .53
25 Supply connection and external flexible cords .53
26 Terminals for external conductors.55

27 Provision for earthing .55
28 Screws and connections .55
29 Clearances, creepage distances and solid insulation .55
30 Resistance to heat and fire.57
31 Resistance to rusting.57
32 Radiation, toxicity and similar hazards.57

Annexes .77

Annex AA (informative) Summary of installation instructions .79

Bibliography.81

– 4 – 60335-2-96 © CEI:2002+A1:2003

Figure 101 – Dispositif pour l'essai des unités chauffantes dans les plafonds en bois .58

Figure 102 – Dispositif pour l'essai des unités chauffantes modulaires .60

Figure 103 – Dispositif pour l'essai des unités chauffantes dans les planchers en bois .62

Figure 104 – Dispositif pour l'essai des unités chauffantes sous le béton.64

Figure 105 – Dispositif pour l'essai des unités chauffantes dans les planchers

et plafonds en bois, combinés.66

Figure 106 – Gabarit pour loger l'aiguille de contact .68

Figure 107 – Dispositif pour l'essai des unités chauffantes

au-dessus des planchers en bois .70

Figure 108 – Dispositif pour l'essai des unités chauffantes
au-dessus des planchers en béton.72
Figure 109 – Dispositif de mesure des courants capacitifs .74

Tableau 101 – Limites des échauffements des surfaces.34

60335-2-96 © IEC:2002+A1:2003 – 5 –

Figure 101 – Arrangement for testing heating units in timber ceilings.59

Figure 102 – Arrangement for testing modular heating units .61

Figure 103 – Arrangement for testing heating units in timber floors.63

Figure 104 – Arrangement for testing heating units below concrete.65

Figure 105 – Arrangement for testing heating units in timber floors

and ceilings in combination.67

Figure 106 – Jig for locating the contact needle .69

Figure 107 – Arrangement for testing heating units above timber floors .71

Figure 108 – Arrangement for testing heating units above concrete floors.73

Figure 109 – Arrangement for measuring capacitive currents.75

Table 101 – Temperature rise limits for surfaces.35

– 6 – 60335-2-96 © CEI:2002+A1:2003

COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE

____________
APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –

SÉCURITÉ –
Partie 2-96: Règles particulières pour les films souples chauffants

pour le chauffage des locaux
AVANT-PROPOS
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La présente partie de la Norme internationale CEI 60335 a été établie par le comité
d'études 61 de la CEI: Sécurité des appareils électrodomestiques et analogues.
La présente version consolidée de la CEI 60335-2-96 comprend la première édition (2002)
[documents 61/2088/FDIS et 61/2105/RVD] et son amendement 1 (2003) [documents
61/2429/FDIS et 61/2464/RVD] et son corrigendum de mai 2003.
Le contenu technique de cette version consolidée est donc identique à celui de l'édition de
base et à son amendement; cette version a été préparée par commodité pour l'utilisateur.
Elle porte le numéro d'édition 1.1.
Une ligne verticale dans la marge indique où la publication de base a été modifiée par
l'amendement 1.
La version française de l’amendement 1 n’a pas été soumise au vote.

60335-2-96 © IEC:2002+A1:2003 – 7 –

INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-96: Particular requirements for flexible sheet heating elements

for room heating
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This part of International Standard IEC 60335 has been prepared by IEC technical committee 61:
Safety of household and similar electrical appliances.
This consolidated version of IEC 60335-2-96 consists of the first edition (2002) [documents
61/2088/FDIS and 61/2105/RVD] and its amendment 1 (2003) [documents 61/2429/FDIS and
61/2464/RVD] and its corrigendum of May 2003.
The technical content is therefore identical to the base edition and its amendment and has
been prepared for user convenience.
It bears the edition number 1.1.
A vertical line in the margin shows where the base publication has been modified by
amendment 1.
The French version of amendment 1 has not been voted upon.

– 8 – 60335-2-96 © CEI:2002+A1:2003

La présente partie 2 doit être utilisée conjointement avec la dernière édition de la CEI 60335-1 et
ses amendements. Elle a été établie sur la base de la quatrième édition (2001) de cette norme.

NOTE 1 L’expression «Partie 1» utilisée dans la présente norme fait référence à la CEI 60335-1.

La présente partie 2 complète ou modifie les articles correspondants de la CEI 60335-1 de
façon à transformer cette publication en norme CEI: Règles de sécurité pour les films souples
chauffants électriques pour le chauffage des locaux.

Lorsqu'un paragraphe particulier de la Partie 1 n'est pas mentionné dans cette partie 2,
ce paragraphe s'applique pour autant qu'il est raisonnable. Lorsque la présente norme

spécifie «addition», «modification» ou «remplacement», le texte correspondant de la Partie 1

doit être adapté en conséquence.
NOTE 2 Le système de numérotation suivant est utilisé:
− paragraphes, tableaux et figures: ceux qui sont numérotés à partir de 101 sont complémentaires à ceux de la
Partie 1;
− notes: à l’exception de celles qui sont dans un nouveau paragraphe ou de celles qui concernent des notes de
la Partie 1, les notes sont numérotées à partir de 101, y compris celles des articles ou paragraphes qui sont
modifiés ou remplacés;
− annexes: les annexes complémentaires sont appelées AA, BB, etc.

NOTE 3 Les caractères d'imprimerie suivants sont utilisés:
− prescriptions: caractères romains;
− modalités d'essais: caractères italiques;
− notes: petits caractères romains.
Les mots en gras dans le texte sont définis à l'article 3. Lorsqu'une définition concerne un adjectif, l'adjectif et le
nom associé figurent également en gras.
Les différences complémentaires suivantes existent dans les pays indiqués ci-après.
− Article 1: Les films souples chauffants qui sont découpés sur le site ne sont pas autorisés (France, Allemagne
et Israël).
− 6.1: L'installation doit correspondre à une construction de classe II (Allemagne).
− 6.1: Les unités chauffantes doivent être de classe II (Israël).
− 7.1: L'installation prévue ne doit pas inclure les murs (Canada et USA).
− 7.12.1 c): Les instructions pour l'installation dans les planchers de planches en résineux doivent indiquer que
l'unité chauffante doit être couverte d'une isolation supplémentaire, munie d’un transformateur isolant, ou être
de classe II (Suède).
− 7.12.1 c): Les instructions relatives à l'installation ne nécessitent pas de se référer aux dispositifs de coupure
différentiels (USA).
− 7.12.101 a): La taille des bornes équipant la grille peut être inférieure (Canada).

− Article 18: Les essais sont différents (USA).
− 22.102: L'essai est différent (USA).
− 22.103: L'essai est différent (USA).
− 25.3: Il n'est pas permis aux unités chauffantes d'incorporer les cordons d'alimentation (Canada et USA).
Le comité a décidé que le contenu de la publication de base et de ses amendements ne sera
pas modifié avant la date de maintenance indiquée sur le site web de la CEI sous
"http://webstore.iec.ch" dans les données relatives à la publication recherchée. A cette date,
la publication sera
• reconduite,
• supprimée,
• remplacée par une édition révisée, ou
• amendée.
60335-2-96 © IEC:2002+A1:2003 – 9 –

This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments. It was established on the basis of the fourth edition (2001) of that standard.

NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.

This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to
convert that publication into the IEC standard: Safety requirements for electrical flexible sheet
heating elements for room heating.

When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies
as far as is reasonable. When this standard states "addition", "modification" or "replacement",

the relevant text of Part 1 is to be adapted accordingly.

NOTE 2 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.

NOTE 3 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
The following additional differences exist in the countries indicated below.
– Clause 1: Flexible sheet heating elements that are cut on site are not allowed (France, Germany and Israel).
– 6.1: The installation is to be of class II construction (Germany).
– 6.1: Heating units are to be class II (Israel).
– 7.1: The intended installation is not to include walls (Canada and USA).
– 7.12.1 c): The instructions in timber floors shall state that the heating unit is to be covered with additional
insulation, be supplied through an isolating transformer, or be class II (Sweden).
– 7.12.1 c): The instructions need not refer to residual current devices (USA).
– 7.12.101 a): The size of the terminals fitted to the grid may be smaller (Canada).
– Clause 18: The tests are different (USA).
– 22.102: The test is different (USA).
– 22.103: The test is different (USA).
– 25.3: Heating units are not allowed to incorporate supply cords (Canada and USA).

The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the maintenance result date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date,
the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
– 10 – 60335-2-96 © CEI:2002+A1:2003

INTRODUCTION
Il a été considéré en établissant la présente Norme internationale que l'exécution de ses dis-

positions était confiée à des personnes expérimentées et ayant une qualification appropriée.

Cette norme reconnaît le niveau de protection internationalement accepté contre les risques

électriques, mécaniques, thermiques, liés au feu et au rayonnement des appareils, lorsqu'ils

fonctionnent comme en usage normal en tenant compte des instructions du fabricant. Elle

couvre également les situations anormales auxquelles on peut s'attendre dans la pratique.

Cette norme tient compte autant que possible des prescriptions de la CEI 60364, de façon à

rester compatible avec les règles d'installation quand l’appareil est raccordé au réseau
d’alimentation. Cependant, des règles nationales d'installation peuvent être différentes.
Si un appareil compris dans le domaine d’application de cette norme comporte également des
fonctions qui sont couvertes par une autre partie 2 de la CEI 60335, la partie 2
correspondante est appliquée à chaque fonction séparément, dans la limite du raisonnable. Si
cela est applicable, on tient compte de l’influence d’une fonction sur les autres fonctions.
Cette norme est une norme de famille de produits traitant de la sécurité d’appareils et a
préséance sur les normes horizontales et génériques couvrant le même sujet.
Un appareil conforme au texte de la présente norme ne sera pas nécessairement jugé
conforme aux principes de sécurité de la norme si, lorsqu'il est examiné et soumis aux essais,
il apparaît qu'il présente d'autres caractéristiques qui compromettent le niveau de sécurité
visé par ces prescriptions.
Un appareil utilisant des matériaux ou présentant des modes de construction différents de
ceux décrits dans les prescriptions de cette norme peut être examiné et essayé en fonction de
l'objectif poursuivi par ces prescriptions et, s'il est jugé pratiquement équivalent, il peut être
estimé conforme aux principes de sécurité de la norme.

60335-2-96 © IEC:2002+A1:2003 – 11 –

INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its

provisions is entrusted to appropriately qualified and experienced persons.

This standard recognizes the internationally accepted level of protection against hazards such

as electrical, mechanical, thermal, fire and radiation of appliances when operated as in

normal use taking into account the manufacturer's instructions. It also covers abnormal

situations that can be expected in practice.

This standard takes into account the requirements of IEC 60364 as far as possible so that

there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features which impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
– 12 – 60335-2-96 © CEI:2002+A1:2003

APPAREILS ÉLECTRODOMESTIQUES ET ANALOGUES –

SÉCURITÉ –
Partie 2-96: Règles particulières pour les films souples chauffants

pour le chauffage des locaux
1 Domaine d'application
L'article de la Partie 1 est remplacé par l’article ci-après.
La présente Norme internationale traite de la sécurité des films souples chauffants destinés
à être intégrés au bâti afin de chauffer la salle dans laquelle ils sont situés, leur tension
assignée ne dépassant pas 250 V pour les installations monophasées et 480 V pour les
autres installations.
Les films souples chauffants sont convertis en unités chauffantes qui sont intégrées au
bâti conformément aux instructions relatives à l'installation après laquelle le niveau de
protection contre les risques est atteint.
NOTE 101 L’attention est attirée sur le fait que
− dans de nombreux pays, différentes règles de câblage s'appliquent;
− pour les unités chauffantes destinées à être utilisées dans les véhicules ou à bord des bateaux, des
prescriptions complémentaires peuvent être nécessaires;
− dans de nombreux pays, des prescriptions complémentaires sont spécifiées par les organismes nationaux
responsables de la protection anti-incendie, par les organismes nationaux responsables de la réglementation
des constructions, par les organisemes nationaux de la santé, par les organismes nationaux responsables de
la protection des travailleurs et par des organismes similaires.
NOTE 102 La présente norme ne s'applique pas
− aux unités chauffantes prévues exclusivement pour des usages industriels;
− aux unités chauffantes destinées à être utilisées dans des locaux présentant des conditions particulières,
telles que la présence d'une atmosphère corrosive ou explosive (poussière, vapeur ou gaz);
− aux couvertures, coussins et appareils chauffants souples analogues (CEI 60335-2-17);
− aux chancelières et carpettes chauffantes électriques (CEI 60335-2-81);
− aux appareils chauffants destinés à être utilisés sous un tapis;
− aux éléments chauffants souples intégrés dans d'autres appareils.
2 Références normatives
L’article de la Partie 1 est applicable avec les exceptions suivantes.
Addition:
CEI 60364-7-701, Installations électriques des bâtiments – Septième partie: Règles pour les
installations et emplacements spéciaux – Section 701: Locaux contenant une baignoire ou
une douche
CEI 60884-1:1995, Prises de courant pour usages domestiques et analogues – Partie 1:
Règles générales
ISO 3864, Couleurs de sécurité et signaux de sécurité

60335-2-96 © IEC:2002+A1:2003 – 13 –

HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-96: Particular requirements for flexible sheet heating elements

for room heating
1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of flexible sheet heating elements intended
to be incorporated into the building to heat the room in which they are located, their rated
voltage being not more than 250 V for single-phase installations and 480 V for other
installations.
Flexible sheet heating elements are converted into heating units that are incorporated in
the building in accordance with the instructions after which the required level of protection
against hazards is achieved.
NOTE 101 Attention is drawn to the fact that
– in many countries different wiring rules apply;
– for heating units intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries additional requirements are specified by the national authorities for fire protection, the
national authorities for building regulations, the national health authorities, the national authorities responsible
for the protection of labour and similar authorities.
NOTE 102 This standard does not apply to
– heating units intended exclusively for industrial purposes;
– heating units intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas);
– blankets, pads and similar flexible heating appliances (IEC 60335-2-17);
– heated mats and foot warmers (IEC 60335-2-81);
– heating appliances intended to be used under a carpet;
– flexible heating elements incorporated in other appliances.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60364-7-701, Electrical installations of buildings – Part 7: Requirements for special
installations or locations – Section 701: Electrical installations in bathrooms
IEC 60884-1:1995, Plugs and socket-outlets for household and similar purposes – Part 1:
General requirement
ISO 3864, Safety colours and safety signs

– 14 – 60335-2-96 © CEI:2002+A1:2003

3 Définitions
L’article de la Partie 1 est applicable avec les exceptions suivantes.

3.1.9 Remplacement:
conditions de fonctionnement normal

fonctionnement de l'unité chauffante après intégration dans le bâtiment conformément aux

instructions relatives à l'installation

Les films souples chauffants dont le courant peut varier en fonction de la longueur de

l'élément chauffant et ceux qui peuvent alimenter d’autres films souples chauffants sont
chargés de sorte que le courant marqué sur l'élément chauffant circule à travers l'unité
chauffante
Les unités chauffantes pour les applications de chauffage à accumulation sont chargées
pour 75 % de la durée de charge assignée.
3.2.7 Remplacement:
conducteurs d'alimentation
ensemble de conducteurs prévus pour connecter l'appareil à des canalisations fixes
3.5.4 Addition:
Les unités chauffantes sont considérées comme des appareils fixes.
3.101
film souple chauffant
élément chauffant composé de feuilles de matériau électriquement isolant laminées avec un
matériau électriquement résistant ou un matériau de base sur lequel sont fixés des conduc-
teurs chauffants isolés électriquement
NOTE Cette définition n’exclut pas d’autres méthodes d’association des matériaux isolants et résistants.
3.102
unité chauffante
film souple chauffant pourvu de moyens de connexion à l’alimentation, y compris l’isolant
entourant les parties actives
NOTE L'unité chauffante peut être partiellement ou complètement préfabriquée.
3.103
unité chauffante modulaire
assemblage préfabriqué constitué d'une unité chauffante et d'autres matériaux pour former
une construction rigide pour le montage sur un plafond
3.104
chauffage à accumulation
utilisation d'unités chauffantes pour chauffer un matériau accumulant la chaleur
NOTE La chaleur est ultérieurement restituée par convection naturelle, la quantité de chaleur restituée étant
modifiée par variation de l’énergie accumulée.
3.105
durée de charge assignée
la plus longue durée de la charge ininterrompue, attribuée à l’unité chauffante par le
fabricant
60335-2-96 © IEC:2002+A1:2003 – 15 –

3 Definitions
This clause of Part 1 is applicable except as follows.

3.1.9 Replacement:
normal operation
operation of the heating unit after incorporation into the building in accordance with the

instructions.
Flexible sheet heating elements, the current of which c
...

IEC 60335-2-96
Edition 1.2 2009-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-96: Particular requirements for flexible sheet heating elements for room
heating
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-96: Règles particulières pour les films souples chauffants pour le
chauffage des locaux
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IEC 60335-2-96
Edition 1.2 2009-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-96: Particular requirements for flexible sheet heating elements for room
heating
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-96: Règles particulières pour les films souples chauffants pour le
chauffage des locaux
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CP
CODE PRIX
ICS 97.100.10; 13.120 ISBN 978-2-88910-167-2
– 2 – 60335-2-96 © IEC:2002+A1:2003

+A2:2008
CONTENTS
FOREWORD.4

INTRODUCTION.6

1 Scope.7

2 Normative references .7

3 Definitions .8

4 General requirement.9

5 General conditions for the tests .9
6 Classification.10
7 Marking and instructions.10
8 Protection against access to live parts.14
9 Starting of motor-operated appliances .14
10 Power input and current .14
11 Heating .14
12 Void.17
13 Leakage current and electric strength at operating temperature.17
14 Transient overvoltages .18
15 Moisture resistance .18
16 Leakage current and electric strength.18
17 Overload protection of transformers and associated circuits .19
18 Endurance.19
19 Abnormal operation .22
20 Stability and mechanical hazards .22
21 Mechanical strength .22
22 Construction .24
23 Internal wiring.25
24 Components .25
25 Supply connection and external flexible cords .26
26 Terminals for external conductors.26

27 Provision for earthing .26
28 Screws and connections .26
29 Clearances, creepage distances and solid insulation .27
30 Resistance to heat and fire.27
31 Resistance to rusting.27
32 Radiation, toxicity and similar hazards.27

Annexes .37

Annex AA (informative) Summary of installation instructions .

Bibliography.39

60335-2-96 © IEC:2002+A1:2003 – 3 –

+A2:2008
Figure 101 – Arrangement for testing heating units in timber ceilings.28

Figure 102 – Arrangement for testing modular heating units .29

Figure 103 – Arrangement for testing heating units in timber floors.30

Figure 104 – Arrangement for testing heating units below concrete.31

Figure 105 – Arrangement for testing heating units in timber floors

and ceilings in combination.32

Figure 106 – Jig for locating the contact needle .33

Figure 107 – Arrangement for testing heating units above timber floors .34

Figure 108 – Arrangement for testing heating units above concrete floors.35

Figure 109 – Arrangement for measuring capacitive currents.36

Table 101 – Temperature rise limits for surfaces.17

– 4 – 60335-2-96 © IEC:2002+A1:2003

+A2:2008
INTERNATIONAL ELECTROTECHNICAL COMMISSION

____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-96: Particular requirements for flexible sheet heating elements

for room heating
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

This part of International Standard IEC 60335 has been prepared by IEC technical committee 61:
Safety of household and similar electrical appliances.
This consolidated version of IEC 60335-2-96 consists of the first edition (2002) [documents
61/2088/FDIS and 61/2105/RVD], its amendment 1 (2003) [documents 61/2429/FDIS and
61/2464/RVD], its amendment 2 (2008) [documents 61/3693/FDIS and 61/3747/RVD] and its
corrigendum of May 2003.
The technical content is therefore identical to the base edition and its amendments and has
been prepared for user convenience.
It bears the edition number 1.2.
A vertical line in the margin shows where the base publication has been modified by
amendments 1 and 2.
The French version of amendment 1 has not been voted upon.

60335-2-96 © IEC:2002+A1:2003 – 5 –

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This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its

amendments. It was established on the basis of the fourth edition (2001) of that standard.

NOTE 1 When “Part 1” is mentioned in this standard, it refers to IEC 60335-1.

This part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to

convert that publication into the IEC standard: Safety requirements for electrical flexible sheet

heating elements for room heating.

When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies

as far as is reasonable. When this standard states "addition", "modification" or "replacement",

the relevant text of Part 1 is to be adapted accordingly.

NOTE 2 The following numbering system is used:
– subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1;
– unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including
those in a replaced clause or subclause;
– additional annexes are lettered AA, BB, etc.
NOTE 3 The following print types are used:
– requirements: in roman type;
– test specifications: in italic type;
– notes: in small roman type.
Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the
associated noun are also in bold.
The following additional differences exist in the countries indicated below.
– Clause 1: Flexible sheet heating elements that are cut on site are not allowed (France, Germany and Israel).
– 6.1: The installation is to be of class II construction (Germany).
– 6.1: Heating units are to be class II (Israel).
– 7.1: The intended installation is not to include walls (Canada and USA).
– 7.12.1 c): The instructions in timber floors shall state that the heating unit is to be covered with additional
insulation, be supplied through an isolating transformer, or be class II (Sweden).
– 7.12.1 c): The instructions need not refer to residual current devices (USA).
– 7.12.101 a): The size of the terminals fitted to the grid may be smaller (Canada).
– Clause 18: The tests are different (USA).
– 22.102: The test is different (USA).
– 22.103: The test is different (USA).
– 25.3: Heating units are not allowed to incorporate supply cords (Canada and USA).
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the maintenance result date indicated on the IEC web site under

"http://webstore.iec.ch" in the data related to the specific publication. At this date,
the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
NOTE 4 The attention of National Committees is drawn to the fact that equipment manufacturers and testing
organizations may need a transitional period following publication of a new, amended or revised IEC publication in
which to make products in accordance with the new requirements and to equip themselves for conducting new or
revised tests.
It is the recommendation of the committee that the content of the amendment 2 be adopted for implementation
nationally not earlier than 12 months or later than 36 months from the date of publication.

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INTRODUCTION
It has been assumed in the drafting of this International Standard that the execution of its

provisions is entrusted to appropriately qualified and experienced persons.

This standard recognizes the internationally accepted level of protection against hazards such

as electrical, mechanical, thermal, fire and radiation of appliances when operated as in

normal use taking into account the manufacturer's instructions. It also covers abnormal
situations that can be expected in practice and takes into account the way in which

electromagnetic phenomena can affect the safe operation of appliances.

This standard takes into account the requirements of IEC 60364 as far as possible so that
there is compatibility with the wiring rules when the appliance is connected to the supply
mains. However, national wiring rules may differ.
If an appliance within the scope of this standard also incorporates functions that are covered
by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as
far as is reasonable. If applicable, the influence of one function on the other is taken into
account.
When a part 2 standard does not include additional requirements to cover hazards dealt with
in Part 1, Part 1 applies.
NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is
not necessary to specify particular requirements for the appliance in question over and above the general
requirements.
This standard is a product family standard dealing with the safety of appliances and takes
precedence over horizontal and generic standards covering the same subject.
NOTE 2 Horizontal and generic standards covering a hazard are not applicable since they have been taken into
consideration when developing the general and particular requirements for the IEC 60335 series of standards. For
example, in the case of temperature requirements for surfaces on many appliances, generic standards, such as
ISO 13732-1 for hot surfaces, are not applicable in addition to Part 1 or part 2 standards.
An appliance that complies with the text of this standard will not necessarily be considered to
comply with the safety principles of the standard if, when examined and tested, it is found to
have other features which impair the level of safety covered by these requirements.
An appliance employing materials or having forms of construction differing from those detailed
in the requirements of this standard may be examined and tested according to the intent of
the requirements and, if found to be substantially equivalent, may be considered to comply
with the standard.
60335-2-96 © IEC:2002+A1:2003 – 7 –

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HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –

SAFETY –
Part 2-96: Particular requirements for flexible sheet heating elements

for room heating
1 Scope
This clause of Part 1 is replaced by the following.
This International Standard deals with the safety of flexible sheet heating elements intended
to be incorporated into the building to heat the room in which they are located, their rated
voltage being not more than 250 V for single-phase installations and 480 V for other
installations.
Flexible sheet heating elements are converted into heating units that are incorporated in
the building in accordance with the instructions after which the required level of protection
against hazards is achieved.
NOTE 101 Attention is drawn to the fact that
– in many countries different wiring rules apply;
– for heating units intended to be used in vehicles or on board ships or aircraft, additional requirements may be
necessary;
– in many countries additional requirements are specified by the national authorities for fire protection, the
national authorities for building regulations, the national health authorities, the national authorities responsible
for the protection of labour and similar authorities.
NOTE 102 This standard does not apply to
– heating units intended exclusively for industrial purposes;
– heating units intended to be used in locations where special conditions prevail, such as the presence of a
corrosive or explosive atmosphere (dust, vapour or gas);
– blankets, pads and similar flexible heating appliances (IEC 60335-2-17);
– heated mats and foot warmers (IEC 60335-2-81);
– heating appliances intended to be used under a carpet;
– flexible heating elements incorporated in other appliances.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:
IEC 60364-7-701, Electrical installations of buildings – Part 7: Requirements for special
installations or locations – Section 701: Electrical installations in bathrooms
IEC 60884-1:1995, Plugs and socket-outlets for household and similar purposes – Part 1:
General requirement
ISO 3864-1, Graphical symbols – Safety colours and safety signs – Part 1: Design principles
for safety signs in workplaces and public areas

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3 Definitions
This clause of Part 1 is applicable except as follows.

3.1.9 Replacement:
normal operation
operation of the heating unit after incorporation into the building in accordance with the

instructions.
Flexible sheet heating elements, the current of which can vary depending on the length of
the heating element and those that can supply other flexible sheet heating elements are
loaded so that the current marked on the heating element flows through the heating unit.
Heating units for storage heating applications are charged for 75 % of the rated charging
period.
3.2.7 Replacement:
supply leads
set of wires intended for connecting the appliance to fixed wiring
3.5.4 Addition:
Heating units are considered to be fixed appliances.
3.101
flexible sheet heating element
heating element consisting of sheets of electrical insulation laminated with electrical
resistance material, or a base material on which electrically insulated heating wires are fixed
NOTE This definition does not preclude other methods of combining the insulation and resistance materials.
3.102
heating unit
flexible sheet heating element equipped with means of connection to the supply and with
insulation surrounding live parts
NOTE The heating unit can be partly or completely prefabricated.
3.103
modular heating unit
prefabricated assembly consisting of a heating unit and other materials to form a rigid

construction for mounting on a ceiling
3.104
storage heating application
use of heating units to heat thermal accumulating material
NOTE The heat is discharged naturally, the heat output being varied by adjusting the energy input.
3.105
rated charging period
longest uninterrupted charging period assigned to the heating unit by the manufacturer
3.106
electrode
conductive part incorporated in a flexible sheet heating element for supplying the heating
material
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4 General requirement
This clause of Part 1 is applicable.

5 General conditions for the tests

This clause of Part 1 is applicable except as follows.

5.2 Replacement:
In general, eight samples are required for the tests.

The tests of 13.3 and of Clauses 15 and 16 are carried out on one sample.
The tests of 18.101 and of Clause 30 are carried out on one sample.
The test of 21.102 is carried out on two samples. One of these samples is also used for the
test of 22.101.
The test of 22.103 is carried out on one sample.
The remaining tests are carried out on the sixth sample. The other two samples are required
for incorporating into the test arrangement to create the necessary thermal environment.
NOTE 101 Additional samples may be necessary if tests have to be repeated.
Nine samples of modular heating units are necessary for the tests of 11.2.102.
Additional samples are necessary if the tests of 18.102 are carried out.
Additional samples may be necessary for testing different sizes of heating units.
The test of 22.105 is carried out on the same sample as that used for the test of 13.2.
Two samples of the additional layer of material, of sufficient size to cover the heating unit,
are required if the test of 21.104 is carried out.
5.3 Addition:
The test of 22.105 is carried out after the test of 13.2.
5.101 Heating units intended to be installed in walls above a height of 2,3 m are subjected
to the tests for installation in ceilings.

5.6 Addition:
Thermostats sensitive to room air temperature or outdoor air temperature are short circuited.
However, the thermostat is not short circuited if it can be set so that it does not cycle.
NOTE 101 For electronic controls, it may be necessary to render the sensing elements inoperative instead of
short circuiting the thermostat.
5.10 Addition:
However, for flexible sheet heating elements that are cut on site, the tests are carried out
after connecting the supply leads and protecting the edges in accordance with the
instructions.
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6 Classification
This clause of Part 1 is applicable except as follows.

6.1 Addition:
Heating units need not be classified. However, if a heating unit is classified, the relevant

requirements apply.
6.2 Addition:
Heating units for installation in a floor of concrete or similar material shall be at least IPX7.

Other heating units shall be at least IPX1.
7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Modification:
Instead of the marking of rated power input or rated current the following applies:
– heating units shall be marked with their rated power input;
– flexible sheet heating elements without connection between adjacent elements shall be
individually marked with their rated power input;
– other flexible sheet heating elements shall be marked with their rated power input per
metre length.
Flexible sheet heating elements shall be marked with their maximum current if
– the current can vary depending on the length of the heating element;
– other flexible sheet heating elements can be supplied through them.
Addition:
Flexible sheet heating elements shall be marked with
– the indication of orientation, unless heating units are symmetrical;
– the intended installation (ceilings, walls or floors);
– the heating mode (direct heating or storage heating), unless intended for both modes.
If the heating unit is only intended for application in floors of concrete or similar materials, it

shall be marked accordingly.
The marking shall be repeated at least once every 0,5 m of the heating element or on every
section that can be cut to form a heating unit.
Flexible sheet heating elements that can be cut on site and have to be cut at specified
places shall be marked appropriately.

60335-2-96 © IEC:2002+A1:2003 – 11 –

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7.6 Addition:
Direct ceiling heating
Direct floor heating
Floor storage heating
Installation in concrete
These symbols are information signs and, except for the colours, the rules of ISO 3864-1
apply.
7.12.1 Addition:
Instructions shall be provided. They shall include
a) explanation of the marking and symbols, if necessary;
b) information for incorporating the heating units into the building, in particular the following:
– precautions to be taken to avoid damage during installation, such as dropping sharp
objects or stepping on the heating unit, or careless pouring of concrete;
– dimensions and distances to be taken into account;
– a statement that the heating units have to be separated from other heat sources such
as luminaires and chimneys;
– description of the fixing areas of the heating unit;
– guidance on how to avoid air gaps between the heating element and the screed of
concrete floors;
– guidance on how to avoid damage to a heating element and its terminations in timber
constructions due to relative movement after installation;
– a warning against incorporating heating units below a height of 2,3 m into walls or

into ceilings inclined at less than 45° to the vertical;
– the lowest ambient temperature at which heating units may be installed;
– the minimum radius for bending the heating element, if applicable.
Except for modular heating units, the instructions shall include the following:
– precautions to be taken to avoid creasing the heating element;
– a statement that the heating unit is not to be installed on irregular surfaces;
– a description of the intended orientation and a statement that the heating unit is to be
installed in this way (for heating units having non-symmetric construction);
c) a statement that the installation is to be in accordance with the national wiring rules. The
substance of the following shall be included:

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– the heating units are to be supplied through a residual current device (RCD) having a

rated residual operating current not exceeding 30 mA. Alternatively, except for

installations in floors surrounding swimming pools, they may be supplied through an

isolating transformer. This statement is not required for class III heating units and for

applications in
• timber floors provided that the instructions for installation state that there is to be

an air gap between the heating unit and the floor;

• timber ceilings;
• floors of concrete or similar material in dry locations (dry locations are areas
outside zone 3 as defined in IEC 60364-7-701) as long as the basic insulation and
additional electrical insulation each withstand the electric strength test of 16.3 for

reinforced insulation;
– how to connect heating units to the supply, giving the cross-sectional area of the
leads, if applicable;
– how to interconnect the heating units, giving the cross-sectional area of the leads, if
applicable;
d) the maximum current allowed to flow through one heating unit when other units are
supplied through it or when the current can vary depending on its length;
e) list of controls, unless they are incorporated into the heating unit;
NOTE 101 Only those controls that are necessary to ensure compliance with the standard need be listed.
f) the maximum thermal resistance between the heating unit and the room;
g) the type of covering materials that are allowed to be used in conjunction with the heating
units with a statement that the advice of the manufacturer is to be requested before
materials other than those recommended are used; the thickness of covering materials,
which for floors shall be at least 5 mm;
h) characteristics of the thermal insulation that is to be inserted between separate heating
units installed to heat a floor and the ceiling below it;
i) specification of any adhesive to be used;
j) a statement that a label is to be fixed adjacent to the distribution board and that it has to
contain the locations of the heating units;
k) if the heating units are installed in a suspended ceiling, or are accessible from the roof
space, a statement that a label giving this information is to be fixed to the access point of
the ceiling.
NOTE 102 A summary of particular installation requirements for different applications is given in Annex AA.
l) in applications in timber floors, a statement indicating that heating units having basic
insulation only shall be covered by additional electrical insulation or supplied through an
isolating transformer.
7.12.101 The instructions for applications in floors of concrete or similar material or under
tiles shall state that
a) a grid is to be installed above the heating unit. The grid is to
– be protected against corrosion but not electrically insulated;
– be electrically and mechanically equivalent to a steel grid having a mesh not more than
50 mm x 50 mm and a wire diameter of 1 mm, unless the grid covers
• class II heating units;
• heating units installed with additional electrical insulation;
– fully cover the heating unit including the fixing areas. It may cover several heating
units;
60335-2-96 © IEC:2002+A1:2003 – 13 –

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– be connected to earth;
– be fitted with terminals suitable for the connection of two conductors each having a

nominal cross-sectional area of 2,5 mm ;

– be checked for electrical continuity during installation.

The grid is not required for
– class III heating units;
– class II heating units supplied through an isolating transformer;

– class II heating units that are installed in dry locations (dry locations are areas

outside zone 3 as defined in IEC 60364-7-701) and are supplied through a residual

current device (RCD);
– heating units installed in dry locations (dry locations are areas outside zone 3 as
defined in IEC 60364-7-701) if the basic insulation and additional electrical insulation
each withstand the electric strength test of 16.3 of reinforced insulation;
– heating units incorporating a metallic shield or braid having a resistance per unit
length equivalent to that of 0,5 mm copper wire.
b) When the heating units have been positioned, they must be covered with an additional
layer of material for mechanical protection. If the heating units are placed on concrete, a
similar layer is to be inserted between the heating unit and the concrete. Adjacent layers
are to overlap and be fixed to each other. The layer is to extend up each wall to the
surface level of the screed. These statements are not required if
– screened insulated heating wires are covered with a sheath complying with 21.103;
– the additional electrical insulation complies with the test of 21.102.
c) when heating units having basic insulation only, other than those supplied at safety
extra-low voltage, are provided with additional electrical insulation, this additional
insulation is to be placed directly on the heating unit;
d) class II heating units are to be installed at a distance of at least 30 mm from conductive
parts of the building, such as water pipes.
NOTE These instructions apply to applications where the concrete or similar material is laid on a timber floor.
7.12.102 The instructions for applications in metallic ceilings or metallic floors for heating
units with basic insulation only, other than those supplied at safety extra-low voltage, shall
state that
a) the flexible sheet heating element is to be fully covered by the ceiling or floor;
b) the metallic parts of the ceiling or floor are to be earthed. The instructions shall state that
they have to be fitted with terminals suitable for the connection of two conductors each
having a nominal cross-sectional area of 2,5 mm and explain how the connection to the
earthing terminal is to be made to ensure a low resistance. The statements regarding the

need for earthing are not required if it is stated that a layer of additional electrical
insulation is to be installed between the heating unit and the ceiling. If this insulation is
not provided, the name of the manufacturer and reference of the insulation shall be given.
7.12.103 The instructions for applications on floors where the heating units are to be
covered by tiles shall state that the heating units are to be covered by additional electrical
insulation, unless the heating units are class I, class II or class III.
7.12.104 The instructions for flexible sheet heating elements that can be cut on site shall
state that this work is only to be carried out by persons authorized by the manufacturer and
shall give information on how to
– cut the element;
– protect the edges of the elements;
– connect the supply leads and the interconnection leads, and insulate the connections.

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7.12.105 The instructions for heating units for storage heating applications shall specify

the rated charging period.
7.14 Modification:
The test with petroleum spirit is not carried out.

Addition:
If symbols are used relating to the intended installation or heating mode, the superimposed

rectangle shall have a height of at least 15 mm.

7.15 Modification:
Only the requirements for switches and controls are applicable.
7.101 A label that contains sufficient space for the locations of the heating units to be listed
shall be provided for each installation giving
– the name, trade mark or identification mark of the manufacturer or responsible vendor;
– the model or type reference.
It shall state the substance of the following:
– flexible sheet heating units are installed in the ceiling/floor;
– do not restrict the thermal emission of the heated ceiling/floor;
NOTE The specific application is to be stated on the label.
– do not affix materials other than those recommended;
– do not insert nails or screws.
Compliance is checked by inspection.
8 Protection against access to live parts
This clause of Part 1 is applicable.
9 Starting of motor-operated appliances

This clause of Part 1 is not applicable.
10 Power input and current
This clause of Part 1 is applicable except as follows.
10.1 Addition:
NOTE 101 The requirement also applies to the rated power input per metre length of flexible sheet heating
elements.
11 Heating
This clause of Part 1 is applicable except as follows.

60335-2-96 © IEC:2002+A1:2003 – 15 –

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11.1 Addition:
The tests are carried out in a room that is maintained at an ambient temperature of
20 °C ± 2 °C.
11.2 Replacement:
Heating units intended to be installed in ceilings are positioned in accordance with 11.2.101.

Modular heating units for suspended ceilings are positioned in accordance with 11.2.102.

Heating units intended to be installed in floors are positioned in accordance with 11.2.103.
Separate heating units intended to heat a timber floor and the ceiling below it are positioned
in accordance with 11.2.104.
If a heating unit is provided with a thermostat having a separate sensor, the sensor is
located on the centreline of one of the adjacent heating units but outside the area of the
thermal insulation placed on the floor.
11.2.101 Heating units intended to be installed in a timber ceiling are placed in a test
framework, as shown in Figure 101. An area of at least 4 m having a shorter dimension not
less than 2 m is covered by at least three heating units, the unit under test being placed in
the middle. The heating units are installed in accordance with the instructions, attention
being paid to where they can be located under parts of timber structures such as cross-
members. The upper side of the heating units is fully covered by a layer of thermal insulation
having a thermal resistance of approximately 5 m K/W. The underside of the heating units is
covered with the most unfavourable material listed in the instructions.
The test framework is suspended so that there is a space having a height of approximately
0,3 m above its upper surface and at least 1,5 m below the lower surface. The test framework
is surrounded by wooden boards extending approximately 0,2 m below its lower surface.
If the instruction for installation allows the use of gypsum boards as a covering material, an
additional test is carried out using this material.
Heating units intended to be installed in a metallic ceiling are installed in accordance with the
instructions.
11.2.102 Nine modular heating units are installed in accordance with the instructions. They

are arranged in a three by three matrix, the heating unit under test being located in the
centre as shown in Figure 102. However, if a dimension of the matrix is less than 1,8 m,
additional heating units are installed. The upper surface of the matrix is fully covered with a
layer of thermal insulation so that the total thermal resistance above the flexible sheet
heating elements is approximately 5 m K/W. The insulation is positioned so that it is in full
contact with the top surfaces of the heating units.
The test framework is suspended so that there is a space having a height of approximately
0,3 m above its upper surface and at least 1,5 m below its lower surface. The test framework
is surrounded by wooden boards extending approximately 0,2 m below its lower surface and
up to the ceiling of the room.

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11.2.103 Heating units intended to be installed in a timber floor are placed in a test
framework, as shown in Figure 103
...