prEN IEC 60335-2-99:2026
(Main)Household and similar electrical appliances - Safety - Part 2-99: Particular requirements for commercial electric hoods
- Abstract
This European standard deals with the safety of electrically operated commercial hoods intended for installation above commercial cooking appliances such as ranges, griddles, griddle grills and deep fat fryers, their rated voltage being not more than 250 V for single phase hoods connected between one phase and neutral, and 480 V for other hoods. Only single complete units and hoods supplied as separate parts which when assembled form a complete working hood, incorporating a fan, are within the scope of the standard.
- Status
- Not Published
- Publication Date
- 26-Oct-2027
- Technical Committee
- CLC/TC 61 - Safety of household and similar electrical appliances
- Drafting Committee
- CLC/TC 61/WG 06 - Activities related to the new MD
- Current Stage
- 4060 - Enquiry results established and sent to TC, SR, BTTF - Enquiry
- Start Date
- 25-Sep-2026
- Due Date
- 28-Jul-2026
- Completion Date
- 25-Sep-2026
prEN IEC 60335-2-99:2026 is a CENELEC draft European standard for the safety of commercial electric hoods. It specifies particular safety requirements for electrically operated hoods installed above commercial cooking appliances, and it is written for manufacturers, test laboratories, installers and others who need to judge whether a hood design and its instructions are suitable for commercial use.
What does prEN IEC 60335-2-99:2026 specify?
prEN IEC 60335-2-99:2026 covers electrically operated commercial hoods for installation above ranges, griddles, griddle grills and deep fat fryers. It applies to single complete units and to hoods supplied as separate parts that form a complete working hood with a fan when assembled.
The standard covers back-draft ventilation systems, down-draft ventilation systems and fume extraction modules. It is aimed at appliances used in places such as restaurant kitchens, canteens, hospitals, bakeries and butcheries, rather than household or similar use.
The document follows the IEC 60335 structure: it uses the general requirements of IEC 60335-1 and then modifies or adds to them for this product family. Its annexes are listed below.
| Annex | What it covers |
|---|---|
| Annex B | Battery-operated appliances, separable batteries and detachable batteries for battery-operated appliances |
| Annex P | Guidance for applying the standard to appliances used in tropical climates |
Clause 1 gives the scope and exclusions. Clauses 2 to 32 cover references, terms, general safety requirements, tests, construction, marking, insulation, fire resistance and related hazards, followed by annexes and a bibliography.
What are the key requirements of prEN IEC 60335-2-99:2026?
prEN IEC 60335-2-99:2026 keeps the safety focus on electric shock, overheating, fire, mechanical hazards and installation-related risks. For a manufacturer or tester, the practical point is that the hood is judged as a complete appliance in its installed condition, not only as a component.
Electrical protection and classification
Clause 6.1 requires appliances to be Class I with respect to protection against electric shock. That means exposed metal parts rely on protective earthing, so earthing design, terminals and bonding become central parts of the safety assessment.
Clause 27.2 requires a terminal for an external equipotential conductor, with effective contact to fixed exposed metal parts and a practical location for connection after installation. In practice, installers need a reliable bonding point, and the design must support it.
Marking and instructions
Clause 7 requires the maximum power input of replaceable lamps to be marked near the lampholder. Clause 7.12 also requires instructions on room air intake when the hood is used with gas or other fuel-burning appliances, regular filter cleaning, fire risk from poor cleaning, and the prohibition on flambé under the appliance.
Clause 7.12.1 adds installation instructions such as minimum distances, ventilation and exhaust-air rules, precautions with other open-flued appliances, and the need for a non-self-resetting device when the hood is used above a gas appliance. Clause 7.15 makes the lamp wattage marking visible during replacement, and Clause 7.101 requires marking of equipotential bonding terminals.
Starting, heating and abnormal operation
Clause 9.101 requires fan motors that provide the cooling needed for Clause 11 compliance to start under all voltage conditions that can occur in use. The test checks start-up at reduced and increased voltage, which matters because failure to start can remove cooling and create a heat hazard.
Clause 11 sets the heating test with the hood installed as instructed and, for hoods above hobs, at the minimum distance stated by the manufacturer. Clause 19.101 repeats the hob test without vessels and with all gas burners on, so the appliance is challenged in a worst-case overheating condition.
Leakage current and insulation
Clauses 13.2 and 16.2 modify the leakage-current limits for class I appliances, using values related to rated power input and different treatment for cord-and-plug connected, stationary and portable appliances. Annex P gives lower limits for tropical climates. In practice, this means leakage-current testing is not taken directly from Part 1 but adjusted for this product family and climate context.
Construction, wiring and fixing
Clause 22.101 requires protection so that moisture and grease do not collect where they would affect creepage distances and clearances, and it keeps specified insulation out of air ducts. Clause 22.102 requires certain motor thermal cut-outs to be non-self-resetting and trip-free, with suitable disconnection of supply circuits.
Clause 22.104 requires secure fixing to a wall or other support, without simple key-hole or hook arrangements that could let the hood lift off unintentionally. Clause 22.105 requires parts that collect grease, including behind filters, to be cleanable. Clause 25.3 and 25.7 address heavy permanently connected appliances and require an oil-resistant flexible supply cord of the specified type when a cord is used.
Earthing, screws and fire resistance
Clause 28.4 and Table 101 deal with screws that maintain electrical and earthing continuity, so contact pressure stays reliable under stress and corrosion. Clause 29.2 sets the insulation environment as pollution degree 3 and uses CTI requirements unless the insulation is well protected.
Clauses 30.1, 30.2.1 and 30.101 cover heat and fire resistance, including ball pressure, glow-wire and burning tests on relevant parts. Clause 30.101 is especially important for hoods because it requires the appliance not to use combustible material that could spread a fire from the cooking surface. Clause 32.101 adds an ozone check for hoods with ionizing-air filter systems.
What terms does prEN IEC 60335-2-99:2026 define?
Hood - A motor-operated appliance intended to collect and remove contaminated air from catering appliances, either recirculating filtered air or discharging it outside.
Normal operation - Operation after installation according to the instructions, with the appliance not connected to a duct; if it is used with other appliances, the test is done with those appliances in operation.
Rated power input - The sum of the power inputs of all elements that can be on at the same time, using the highest possible combination when several are possible.
Class I - An appliance type that depends on protective earthing for protection against electric shock.
CTI - Comparative tracking index, used here to judge insulating materials exposed to pollution degree 3 conditions.
GWFI - Glow-wire flammability index, used in the fire-resistance assessment of exposed parts.
Trip-free - A cut-out action that operates independently of the position or manipulation of the actuating member.
Who uses prEN IEC 60335-2-99:2026?
prEN IEC 60335-2-99:2026 is used by manufacturers of commercial electric hoods, including hood and extraction-system designers who need to build in earthing, fixing, wiring, filtering and fire-safety features from the start. It is also used by test laboratories, certification bodies and compliance teams that verify heating, leakage current, stability, construction and fire-performance tests.
Installers and technical writers use it for installation and user instructions, especially where the hood is fitted above gas or other fuel-burning cooking appliances. Buyers and specifiers in catering, healthcare and food-service settings use it to compare products for kitchens in restaurants, canteens, hospitals, bakeries and butcheries.
What changed in prEN IEC 60335-2-99:2026 from the previous edition?
The draft text is based on IEC 60335-2-99:2021 and is identified as superseding EN IEC 60335-2-99:2024 and its amendments and corrigenda. The underlying IEC revision from the earlier edition aligned the text with IEC 60335-1:2020, converted several notes into normative text, excluded battery-operated appliances and appliances used in areas open to the public, added a requirement for appliances incorporating means for ionizing air, and harmonized the wording with other standards under IEC/TC61/MT32.
Which standards are used with prEN IEC 60335-2-99:2026?
- IEC 60335-1 - provides the general safety requirements that this Part 2 modifies and supplements.
- IEC 60335-2-31 - identifies domestic range hoods, which are outside this part’s scope.
- IEC 60335-2-65 - provides the ozone test method used for appliances with ionizing air treatment.
- ISO 898-1 - gives the properties for carbon steel and alloy steel screws used in construction.
- ISO 3506-1, ISO 3506-2, ISO 3506-3, ISO 3506-4 - cover corrosion-resistant stainless-steel fasteners used for screws, nuts and similar fasteners.
- IEC 60695-2-12 - provides the glow-wire flammability index used in the fire tests.
- IEC 60695-11-10 - provides the HB flammability classification used for filter material.
- ISO 9772 - provides the burning test for HBF material used for certain non-metallic filter materials.
- IEC 60364 - is noted in the introduction as the wiring-rules basis the appliance should be compatible with.
What does the prEN IEC 60335-2-99 document contain?
The document contains the full Part 1-based safety structure for this product family, with product-specific additions and replacements in Clauses 1 to 32. It includes installation and user-instruction requirements, electrical tests, heating and abnormal-operation tests, construction rules for grease, moisture and fixing, and fire-resistance checks for exposed and internal parts.
It also contains a special starting test for fan motors, leakage-current requirements adjusted for power input, and an earthing-continuity screw test supported by Table 101. The annexes add tropical-climate guidance in Annex P and the Part 1 battery annex listing in Annex B, while Clause 30.101 refers to a normative needle-flame test in Annex E.
Relations
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 05-May-2026
- Effective Date
- 07-Apr-2025
- Effective Date
- 07-Apr-2025
- Effective Date
- 01-Apr-2025
- Effective Date
- 01-Apr-2025
- Effective Date
- 01-Apr-2025
Frequently Asked Questions
prEN IEC 60335-2-99:2026 is a draft published by CLC. Its full title is "Household and similar electrical appliances - Safety - Part 2-99: Particular requirements for commercial electric hoods". This standard covers: This European standard deals with the safety of electrically operated commercial hoods intended for installation above commercial cooking appliances such as ranges, griddles, griddle grills and deep fat fryers, their rated voltage being not more than 250 V for single phase hoods connected between one phase and neutral, and 480 V for other hoods. Only single complete units and hoods supplied as separate parts which when assembled form a complete working hood, incorporating a fan, are within the scope of the standard.
This European standard deals with the safety of electrically operated commercial hoods intended for installation above commercial cooking appliances such as ranges, griddles, griddle grills and deep fat fryers, their rated voltage being not more than 250 V for single phase hoods connected between one phase and neutral, and 480 V for other hoods. Only single complete units and hoods supplied as separate parts which when assembled form a complete working hood, incorporating a fan, are within the scope of the standard.
prEN IEC 60335-2-99:2026 is classified under the following ICS (International Classification for Standards) categories: 97.040.20 - Cooking ranges, working tables, ovens and similar appliances. The ICS classification helps identify the subject area and facilitates finding related standards.
prEN IEC 60335-2-99:2026 has the following relationships with other standards: It is inter standard links to EN 60335-2-65:2003/A1:2008, EN ISO 3506-1:2020, EN 60335-2-65:2003/A2:2022, EN ISO 898-1:2013, EN ISO 3506-2:2020, EN ISO 3506-3:2025, EN ISO 3506-4:2025, EN 60335-2-65:2003, prEN IEC 60335-2-99:2026/prA1:2026, prEN IEC 60335-2-99:2026/prAA:2026, EN 60335-2-99:2003/A11:2023, EN 60335-2-99:2003/A1:2019, EN 60335-2-99:2003. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
prEN IEC 60335-2-99:2026 is associated with the following European legislation: EU Directives/Regulations: 2014/53/EU, 2023/1230; Standardization Mandates: M/536, M/605. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
prEN IEC 60335-2-99:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2026
Gospodinjski in podobni električni aparati - Varnost - 2-99. del: Posebne zahteve
za komercialne električne kuhinjske nape
Household and similar electrical appliances - Safety - Part 2-99: Particular requirements
for commercial electric hoods
Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-99:
Besondere Anforderungen für elektrische Dunstabzugshauben für den gewerblichen
Gebrauch
Appareils électrodomestiques et analogues - Sécurité - Partie 2-99: Exigences
particulières pour les hottes de cuisine électriques à usage commercial
Ta slovenski standard je istoveten z: prEN IEC 60335-2-99:2026
ICS:
97.040.20 Štedilniki, delovni pulti, Cooking ranges, working
pečice in podobni aparati tables, ovens and similar
appliances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD DRAFT
prEN IEC 60335-2-99
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2026
ICS 97.040.20 Will supersede EN 60335-2-99:2003; EN 60335-2-
99:2003/A1:2019; EN 60335-2-99:2003/A11:2023
English Version
Household and similar electrical appliances - Safety - Part 2-99:
Particular requirements for commercial electric hoods
(IEC 60335-2-99:2021)
Appareils électrodomestiques et analogues - Sécurité - Sicherheit elektrischer Geräte für den Hausgebrauch und
Partie 2-99: Exigences particulières pour les hottes de ähnliche Zwecke - Teil 2-99: Besondere Anforderungen für
cuisine électriques à usage commercial elektrische Dunstabzugshauben für den gewerblichen
(IEC 60335-2-99:2021) Gebrauch
(IEC 60335-2-99:2021)
This draft European Standard is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2026-09-25.
The text of this draft consists of the text of IEC 60335-2-99:2021.
If this draft becomes a European Standard, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CENELEC in three official versions (English, French, German).
A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to
the CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 81641 Ref. No. prEN IEC 60335-2-99:2026 E
1 European foreword
2 This document (prEN IEC 60335-2-99:2026) consists of the text of IEC 60335-2-99:2021 prepared by
3 IEC/TC 61 "Safety of household and similar electrical appliances".
4 This document is currently submitted to the Enquiry.
5 The following dates are proposed:
• latest date by which the existence of this (doa) dav + 6 months
document has to be announced at national
level
• latest date by which this document has to be (dop) dav + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dav + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
6 This document will supersede EN IEC 60335-2-99:2024 and all of its amendments and corrigenda (if any).
7 This document is read in conjunction with prEN IEC 60335-2-99:2026/prA1:2026 and prEN IEC 60335-2-
8 99:2026/prAA:2026.
9 This document has been prepared under a standardization request addressed to CENELEC by the European
10 Commission. The Standing Committee of the EFTA State subsequently approves these requests for its
11 Member States.
12 For relationship with EU legislation, see informative Annexes ZZB and ZZC, which are an integral part of
13 prEN IEC 60335-2-99:2026/prAA:2026.
IEC 60335-2-99 ®
Edition 2.0 2021-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Household and similar electrical appliances – Safety –
Part 2-99: Particular requirements for commercial electric hoods
Appareils électrodomestiques et analogues – Sécurité –
Partie 2-99: Exigences particulières pour les hottes de cuisine électriques
à usage commercial
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.040.20 ISBN 978-2-8322-4500-2
– 2 – IEC 60335-2-99:2021 © IEC 2021
CONTENTS
FOREWORD . 3
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 8
3 Terms and definitions . 8
4 General requirement . 9
5 General conditions for the tests . 9
6 Classification . 9
7 Marking and instructions . 9
8 Protection against access to live parts . 10
9 Starting of motor-operated appliances . 11
10 Power input and current . 11
11 Heating . 11
12 Charging of metal-ion batteries . 12
13 Leakage current and electric strength at operating temperature . 12
14 Transient overvoltages . 12
15 Moisture resistance . 12
16 Leakage current and electric strength . 13
17 Overload protection of transformers and associated circuits . 13
18 Endurance . 13
19 Abnormal operation . 13
20 Stability and mechanical hazards . 14
21 Mechanical strength . 14
22 Construction . 14
23 Internal wiring . 15
24 Components . 15
25 Supply connection and external flexible cords . 15
26 Terminals for external conductors . 16
27 Provision for earthing . 16
28 Screws and connections . 16
29 Clearances, creeping distances and solid insulation . 17
30 Resistance to heat and fire . 17
31 Resistance to rusting . 18
32 Radiation, toxicity and similar hazards . 18
Annexes . 19
Annex B (normative) Battery-operated appliances, separable batteries and
detachable batteries for battery-operated appliances . 20
Annex P (informative) Guidance for the application of this standard to appliances used
in tropical climates . 21
Bibliography . 22
Table 101 – Assembling torques for screwed connections providing earthing continuity . 17
IEC 60335-2-99:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-99: Particular requirements for commercial electric hoods
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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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.
IEC 60335-2-99 has been prepared by IEC technical committee 61: Safety of household and
similar electrical appliances. It is an International Standard.
This second edition cancels and replaces the first edition published in 2003 and
Amendment 1:2017. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the text has been aligned with IEC 60335-1:2020;
b) some notes have been converted to normative text (Clause 1, 11.7, 22.102, 22.104, 27.2,
30.101);
c) exclusion of battery-operated appliances and appliances used in areas open to the public
(Clause 1);
d) addition of requirement for appliances incorporating means for ionizing air (32.101);
e) conciliation of the text of IEC 60335-2-99 with other standards under IEC/TC61/MT32.
– 4 – IEC 60335-2-99:2021 © IEC 2021
The text of this International Standard is based on the following documents:
Draft Report on voting
61/6371/FDIS 61/6421/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 60335 series, published under the general title Household and
similar electrical appliances – Safety, can be found on the IEC website.
This Part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its
amendments unless that edition precludes it; in that case, the latest edition that does not
preclude it is used. It was established on the basis of the sixth edition (2020) 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: Particular requirements for commercial electric hoods.
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 in 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 document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IEC 60335-2-99:2021 © IEC 2021 – 5 –
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 this publication be adopted for implementation nationally
not earlier than 12 months or later than 36 months from the date of publication.
The following differences exist in the countries indicated below.
– 6.1: Class 01 hoods are allowed (Japan).
– 13.2: Leakage current limits are different (Japan).
– 16.2: Leakage current limits are different (Japan).
– 6 – IEC 60335-2-99:2021 © IEC 2021
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.
Guidance documents concerning the application of the safety requirements for appliances can
be accessed via TC 61 supporting documents on the IEC website
https://www.iec.ch/tc61/supportingdocuments
This information is given for the convenience of users of this International Standard and does
not constitute a replacement for the normative text in this standard.
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.
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 publications, basic safety publications and group safety publications 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.
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 that 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.
NOTE 3 Standards dealing with non-safety aspects of household appliances are:
– IEC standards published by TC 59 concerning methods for measuring performance;
– CISPR 11, CISPR 14-1 and relevant IEC 61000-3 series standards concerning electromagnetic emissions;
– CISPR 14-2 concerning electromagnetic immunity;
– IEC standards published by TC 111 concerning environmental matters.
IEC 60335-2-99:2021 © IEC 2021 – 7 –
HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES –
SAFETY –
Part 2-99: Particular requirements for commercial electric hoods
1 Scope
This clause of Part 1 is replaced by the following.
This part of IEC 60335 deals with the safety of electrically operated commercial hoods intended
for installation above commercial cooking appliances such as ranges, griddles, griddle grills
and deep fat fryers, their rated voltage being not more than 250 V for single phase hoods
connected between one phase and neutral, and 480 V for other hoods. Only single complete
units and hoods supplied as separate parts which when assembled form a complete working
hood, incorporating a fan, are within the scope of the standard.
The hood may be used above one or more appliance or types of appliances.
The following extraction systems are within the scope of this standard:
– back-draft ventilation systems;
– down-draft ventilation systems;
– fume extraction modules.
These appliances are not intended for household and similar purposes. They are used in areas
not open to the public, for example in kitchens of restaurants, canteens, hospitals and in
commercial enterprises such as bakeries and butcheries.
As far as is practicable, this standard deals with the common hazards presented by these types
of appliances.
Attention is drawn to the fact that:
– for appliances intended to be used in vehicles or on board ships or aircraft, additional
requirements can be necessary;
– in many countries additional requirements including ventilation requirements are specified
by the national health authorities, the national authorities responsible for the protection of
labour and similar authorities.
This standard does not apply to:
– domestic range hoods (IEC 60335-2-31);
– purpose-built hoods, although this standard can be used as a guide (a purpose-built hood
is either constructed on-site or specially constructed in the factory and is not mass
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