HD 60364-7-753:2014

Low-voltage electrical installations - Part 7-753: Requirements for special installations or locations - Heating cables and embedded heating systems

IEC 60364-7-753:2014 applies to embedded electric heating systems for surface heating. It also applies to electric heating systems for de-icing or frost prevention or similar applications. Both indoor and outdoor systems are covered. Heating systems for industrial and commercial applications complying with relevant parts of IEC 60519, IEC 62395 and IEC 60079 are not covered. This second edition cancels and replaces the first edition published in 2005 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - the title has been changed from "Floor and ceiling heating systems" to "Heating cables and embedded heating systems" to align with the revised scope; - the scope has been extended and now covers embedded electric heating systems for surface heating, also electric heating systems for de-icing or frost prevention or similar applications, and covers both indoor and outdoor systems. This includes heating systems for: walls, ceiling, floors, roofs, drainpipes, gutters, pipes, stairs, roadways, non-hardened compacted areas (e.g. football fields, lawns); - for wall heating systems, this standard contains additional requirements (e.g. metal sheath/enclosure/grid) to protect against the effects of overheating caused by a short-circuit between live conductors due to penetration of an embedded heating unit; - from heating units delivered from the manufacturer without exposed-conductive-parts, this standard requires a metallic mesh grid covering. This has been reduced to 3 mm for wall heating systems; - this standard now requires that electric heating systems shall be selected and erected so as to avoid any harmful influence between the heating system and any electrical or non-electrical installations envisaged; - and this standard covers surface temperatures and now refers the reader to the appropriate IEC guide.

Errichten von Niederspannungsanlagen - Teil 7-753: Anforderungen für Betriebsstätten, Räume und Anlagen besonderer Art - Heizleitungen und umschlossene Heizsysteme

Installations électriques à basse tension - Partie 7-753: Exigences pour les installations ou emplacements spéciaux - Câbles chauffants et systèmes de chauffage intégrés

L'IEC 60364-7-753:2014 s'applique aux systèmes de chauffage électriques intégrés pour le chauffage de surface. Elle s'applique aussi aux systèmes de chauffage électriques pour le dégivrage ou la prévention du gel ou pour des applications analogues. Les systèmes tant intérieurs qu'extérieurs sont couverts. Les systèmes de chauffage pour les applications industrielles et commerciales conformes aux parties applicables des normes IEC 60519, IEC 62395 et IEC 60079 ne sont pas couverts. Cette deuxième édition annule et remplace la première édition parue en 2005 et constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: - le titre a été modifié de "Systèmes de chauffage par sol ou plafond" en "Câbles chauffants et systèmes de chauffage intégrés" pour être en cohérence avec le nouveau domaine d'application; - le domaine d'application a été étendu et couvre maintenant les systèmes de chauffage électrique intégrés pour le chauffage de surfaces, les systèmes de chauffage électrique pour le dégivrage ou la prévention du gel ou des applications similaires, et couvre à la fois les systèmes intérieurs et extérieurs. Ceci inclut les systèmes pour: murs, plafonds, sols, toits, tuyaux d'évacuation, gouttières, tuyaux, escaliers, chaussées, zones compactées meubles (par exemple terrains de football, pelouses); - pour les systèmes de chauffage installés dans les murs, la présente norme contient des exigences supplémentaires (par exemple gaine/enveloppe/grillage métallique) pour la protection contre les échauffements dus à un court-circuit entre conducteurs actifs pénétrant dans l'unité de chauffage intégré; - pour les unités de chauffage fournies par le constructeur sans masse, la présente norme exige un recouvrement par un grillage métallique. Celui-ci a été réduit à 3 mm pour les systèmes de chauffage installés dans les murs; - la présente norme exige maintenant que les systèmes de chauffage électrique soient choisis et mis en oeuvre de manière à éviter toute influence dommageable entre le système de chauffage et toute installation électrique ou non-électrique prévue; - et la présente norme traite des températures de surface et renvoie maintenant le lecteur au guide approprié de l'IEC.

Nizkonapetostne električne inštalacije - 7-753. del: Zahteve za posebne inštalacije ali lokacije - Ogrevalni kabli in z njimi povezani sistemi ogrevanja (IEC 60364-7-753:2014)

Ta del standarda IEC 60364 velja za vgrajene električne sisteme ogrevanja za površinsko ogrevanje. Prav tako velja za električne sisteme ogrevanja, namenjene tajanju ali preprečevanju zamrzovanja ali podobni uporabi. Zajema tako sisteme v zaprtih prostorih kot tudi sisteme na prostem. Sistemi ogrevanja za industrijsko in komercialno uporabo, ki so v skladu z ustreznimi deli standardov IEC 60519, IEC 62395 in IEC 60079, niso zajeti. OPOMBA Primeri sistemov ogrevanja, zajetih v tem standardu, so sistemi ogrevanja za stene, strope, tla, strehe, odtočne cevi, žlebove, cevi, stopnišča, cestišča in neutrjena zbita območja (npr. nogometna igrišča, trate).

General Information

• Status: Published
• Publication Date: 28-Aug-2014
• Withdrawal Date: 10-Jun-2017
• ICS: 91.140.50 - Electricity supply systems
• Technical Committee: CLC/TC 64 - Electrical installations and protection against electric shock
• Drafting Committee: CLC/TC 64/WG 14 - Floor and ceiling heating systems
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 29-Aug-2014
• Completion Date: 29-Aug-2014
• Ref Project: SIST HD 60364-7-753:2014 - Low-voltage electrical installations - Part 7-753: Requirements for special installations or locations - Heating cables and embedded heating systems

Relations

• Replaces: HD 384.7.753 S1:2002 - Electrical installations of buildings - Part 7: Requirements for special installations or locations - Section 753: Floor and ceiling heating systems
• Effective Date: 29-Jan-2023
• Corrected By: HD 60364-7-753:2014/AC:2014 - Low-voltage electrical installations - Part 7-753: Requirements for special installations or locations - Heating cables and embedded heating systems
• Effective Date: 22-Oct-2014

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2014
1L]NRQDSHWRVWQHHOHNWULþQHLQãWDODFLMHGHO=DKWHYH]DSRVHEQHLQãWDODFLMH
DOLORNDFLMH2JUHYDOQLNDEOLLQ]QMLPLSRYH]DQLVLVWHPLRJUHYDQMD,(&

Low-voltage electrical installations - Part 7-753: Requirements for special installations or
locations - Heating cables and embedded heating systems
Ta slovenski standard je istoveten z: HD 60364-7-753:2014
ICS:
29.060.01 (OHNWULþQHåLFHLQNDEOLQD Electrical wires and cables in
VSORãQR general
91.140.10 Sistemi centralnega Central heating systems
ogrevanja
91.140.50 Sistemi za oskrbo z elektriko Electricity supply systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONIZATION DOCUMENT HD 60364-7-753

DOCUMENT D'HARMONISATION
HARMONISIERUNGSDOKUMENT
August 2014
ICS 91.140.50
English Version
Low-voltage electrical installations - Part 7-753: Requirements
for special installations or locations - Heating cables and
embedded heating systems
(IEC 60364-7-753:2014)
Installations électriques à basse tension - Partie 7-753: Errichten von Niederspannungsanlagen - Teil 7-753:
Exigences pour les installations ou emplacements spéciaux Anforderungen für Betriebsstätten, Räume und Anlagen
- Câbles chauffants et systèmes de chauffage intégrés besonderer Art - Heizleitungen und umschlossene
(CEI 60364-7-753:2014) Heizsysteme
(IEC 60364-7-753:2014)
This Harmonization Document was approved by CENELEC on 2014-06-11. CENELEC members are bound to comply with the
CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization Document at national level.
Up-to-date lists and bibliographical references concerning such national implementations may be obtained on application to the CEN-
CENELEC Management Centre or to any CENELEC member.
This Harmonization Document exists in three official versions (English, French, German).
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. HD 60364-7-753:2014 E

Foreword
The text of document 64/1916/FDIS, future edition 2 of IEC 60364-7-753, prepared by IEC/TC 64
"Electrical installations and protection against electric shock" was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as HD 60364-7-753:2014.

The following dates are fixed:
(dop) 2015-03-11
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2017-06-11
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60364-7-753:2014 was approved by CENELEC as a
European Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60079 Series NOTE Harmonized as EN 60079 Series (partly modified).
IEC 60079-30-1 NOTE Harmonized as EN 60079-30-1.
IEC 60079-30-2 NOTE Harmonized as EN 60079-30-2.
IEC 60519 Series NOTE Harmonized as EN 60519 Series (not modified).
IEC 62395 Series NOTE Harmonized as EN 62395 Series (not modified).

- 3 - HD 60364-7-753:2014
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.

NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu
Publication Year Title EN/HD Year
IEC 60079-7 -  Explosive atmospheres - EN 60079-7 -
Part 7: Equipment protection
by increased safety "e"
IEC 60335-2-96 -  Household and similar EN 60335-2-96 -
electrical appliances - Safety -
Part 2-96: Particular requirements for
flexible sheet heating elements for room
heating
IEC 60364 series Low-voltage electrical installations HD 60364 series
IEC 60364-4-41 2005 Low-voltage electrical installations - HD 60364-4-41 2007
(mod) Part 4-41: Protection for safety - + corr. July 2007
Protection against electric shock
IEC 60364-4-42 -  Low voltage electrical installations - HD 60364-4-42 -
Part 4-42: Protection for safety -
Protection against thermal effects
IEC 60800 -  Heating cables with a rated voltage - -
of 300/500 V for comfort heating and
prevention of ice formation
Annex ZB
(normative)
Special national conditions
Special national condition: National characteristic or practice that cannot be changed even over
a long period, e.g. climatic conditions, electrical earthing conditions.

NOTE  If it affects harmonization, it forms part of the Harmonization Document.

For the countries in which the relevant special national conditions apply these provisions are
normative, for other countries they are informative.

Subclause Special national condition
753.415.1.1 Norway
In Norway the following additional requirements apply:
In Norway, circuits supplying heating units galvanic connected to a public IT distribution
network, the rated residual operating current of the RCDs may be selected to be less
or equal to 30 mA above the leakage current for the heating units in normal operation.
753.424.101 Germany
nd
Add the following new 2 paragraph:
This requirement does not apply for circuits using the protective measure SELV.
753.432.1 Spain
(new)
In Spain the following additional requirements apply:
In Spain, circuits supplying heating units in dwellings shall be protected by circuit
breakers with a maximum rated current of 25 A.
753.511 Spain
In Spain the following additional requirements apply:
In Spain, the standard applicable for heating cables is UNE 21155-1.
753.522.1, Germany
headline
In Germany, the following additional requirements apply:
Delete “(AA)”
Germany
753.522.4
headline
In Germany, the following additional requirements apply:
Delete “(AE)”
753.524 Spain
(new)
In Spain the following additional requirements apply:
In Spain, the line conductor of the cable supplying the thermostat shall have a cross-
sectional area equal to that of the cold lead.
Annex A, Germany
headline
Modify headline as follows:
Information for the contractor and the user of the installation
Germany
Annex A,
st
first
Modify the text of the 1 paragraph as follows:
paragraph
A description of the heating system shall be provided by the installer of the heating
system for the owner of the building upon completion of the installation or for his agent.

- 5 - HD 60364-7-753:2014
Annex ZC
(informative)
A-deviations
A-deviation: National deviation due to regulations, the alteration of which is for the time being
outside the competence of the CENELEC national member.

This Harmonization Document does not fall under any Directive of the EC.

In the relevant CENELEC countries these A-deviations are valid instead of the provisions of the
Harmonization Document until they have been removed.

Subclause Deviation
753.411.1, Austria
first
Regulations for electrical low voltage installations, statutory order BGBl. II/223/2010
paragraph
issued 2010-07-12.
In Austria the following additional requirements apply:
In the case of heating units which are delivered from the manufacturer without an
earthed conductive shield a suitable conductive covering, for example, a mesh metallic
grid, with an mesh size not more than 3 mm for ceilings, floor and wall installations,
shall be provided on site and connected to the protective conductor of the electrical
installation.
753.5 France
According to French legislation “Arrêté du 22 octobre 1969” the following applies:
753.5 Selection and erection of equipment
For heating components of heating floor, NF P 52-302-1 applies.

IEC 60364-7-753 ®
Edition 2.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Low-voltage electrical installations –

Part 7-753: Requirements for special installations or locations – Heating cables

and embedded heating systems
Installations électriques à basse tension –

Partie 7-753: Exigences pour les installations ou emplacements spéciaux –

Câbles chauffants et systèmes de chauffage intégrés

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 91.140.50 ISBN 978-2-8322-1573-9

– 2 – IEC 60364-7-753:2014 © IEC 2014
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
753 Heating cables and embedded heating systems. 6
753.1 Scope . 6
753.2 Normative references . 6
753.3 Terms and definitions . 6
753.4 Protection for safety . 7
753.41 Protection against electric shock . 7
753.411 Automatic disconnection of supply . 8
753.413 Protective measure: electrical separation . 8
753.42 Protection against thermal effects . 8
753.423 Protection against burns . 8
753.424 Protection against overheating . 8
753.5 Selection and erection of electrical equipment . 9
753.51 Common rules . 9
753.511 Compliance with standards . 9
753.514 Identification . 9
753.515 Prevention of mutual detrimental influences . 9
753.52 Wiring systems . 10
753.520 Introduction . 10
753.522 Selection and erection of wiring systems in relation to external
influences . 10
Annex A (normative) Information for the user of the installation . 11
Annex B (informative) List of notes concerning certain countries. 12
Bibliography . 13

IEC 60364-7-753:2014 © IEC 2014 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
LOW-VOLTAGE ELECTRICAL INSTALLATIONS –

Part 7-753: Requirements for special installations or locations –
Heating cables and embedded heating systems

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
Publicati
...