Electrical installations of buildings - Part 7-703: Requirements for special installations or locations - Rooms and cabins containing sauna heaters

The particular requirements of this part of IEC 60364 apply to: - sauna cabins erected on site, e.g. in a location or in a room; - the room where the sauna heater is, or the sauna heating appliances are installed. In this case the whole room is considered as the sauna. They do not apply to prefabricated sauna cabins complying with a relevant equipment standard. Where facilities like cold water basins or showers, etc. are installed, the requirements of Part 7-701 also apply. The main technical changes with respect to the previous edition concern the updating of requirements to take into account the evolution in sauna equipment, with particular emphasis on prefabricated cabins. In addition, in response to a need from installers, there has been some elaboration on temperature repartition in saunas as well as protection against electric shock. Finally, the four zones described in the first edition have now been reduced to three zones.

Installations électriques dans les bâtiments - Partie 7-703: Exigences pour les installations ou emplacements spéciaux - Locaux contenant des radiateurs pour saunas

Les exigences particulières de la présente partie de la CEI 60364 s'appliquent: - aux cabines de sauna installées sur place, dans un local ou dans une pièce; - aux locaux où le chauffage du sauna ou ses éléments de chauffage sont installés. Dans ce cas, l'ensemble du local est considéré comme un sauna. Elles ne s'appliquent pas aux cabines de sauna préfabriquées conformes à une norme de produit. Si des équipements tels que des bassins d'eau froide ou des douches, etc., sont installés, les exigences de la Partie 7-701 sont aussi applicables. Les modifications techniques majeures, par rapport à l'édition précédente, concernent la mise à jour des exigences relatives à l'évolution de l'équipement de sauna, plus particulièrement les cabines de sauna préfabriquées. Par ailleurs, en réponse à la demande des constructeurs, la répartition de la température dans les saunas, ainsi que la protection contre les chocs électriques ont été élaborées. Enfin, quatre volumes décrites dans la première édition ont été, maintenant, réduites à trois volumes.

Električne inštalacije zgradb – 7-703. del: Zahteve za posebne inštalacije ali lokacije – Sobe in kabine s savna greli

General Information

Status
Not Published
ICS
29.020 - Electrical engineering in general
 
91.140.50 - Electricity supply systems
Technical Committee
TC 64 - Electrical installations and protection against electric shock
Current Stage
PPUB - Publication issued
Start Date
26-Oct-2004
Ref Project
SIST IEC 60364-7-703:2006 - Electrical installations of buildings - Part 7-703: Requirements for special installations or locations - Rooms and cabins containing sauna heaters

Overview

IEC 60364-7-703 specifies electrical safety and installation requirements for rooms and cabins containing sauna heaters. It supplements the general IEC 60364 series by addressing the particular hazards of high temperature, moisture and proximity to heating appliances. The standard applies to on-site erected sauna cabins and rooms where the sauna heater is installed (the whole room is considered the sauna) and excludes prefabricated cabins that comply with a relevant equipment standard.

Key topics and technical requirements

  • Three temperature zones: The previous four-zone model was reduced to three zones. Zone definitions are based on distance from the sauna heater, floor level and thermal insulation boundaries (zone 1: the heater volume-0.5 m around the heater; zone 2: outside zone 1 up to 1.0 m above floor; zone 3: remaining sauna volume).
  • Protection against electric shock:
    • RCDs: All sauna circuits, except the sauna heater itself, must have residual current devices (RCDs) with rated residual operating current ≤ 30 mA.
    • SELV/PELV: Use of SELV/PELV is covered; note national exceptions (e.g., PELV not permitted in Italy).
    • Barriers and insulation: Equipment must be protected by barriers/enclosures (minimum IPXXB or IP2X) or insulation able to withstand 500 V a.c. rms for 1 minute.
    • Forbidden measures: Protection by placing equipment out of reach or by non-conducting location/earth-free local equipotential bonding is not permitted.
  • Equipment selection and IP ratings:
    • Minimum degree of protection IP24 for sauna equipment; IPX5 if cleaning by water jets is likely.
    • In zone 1 only sauna heater equipment is permitted; in zone 2 no special heat-resistance requirement; in zone 3 equipment must withstand 125 °C and cable insulation 170 °C.
  • Wiring and installation:
    • Wiring should preferably be installed on the cold side of thermal insulation. If placed on the warm side (zones 1 or 3), wiring must be heat-resistant.
    • Metallic sheaths and conduits shall not be accessible in normal use.
  • Controls and outlets:
    • Functional controls for the heater may be inside the sauna per manufacturer instructions; other switchgear (e.g., lighting) must be outside. Socket-outlets are prohibited inside sauna locations.
  • Manufacturer instructions: Sauna heaters must be installed per IEC 60335-2-53 and manufacturer guidance.

Applications and users

Who uses IEC 60364-7-703:

  • Electrical designers and engineers specifying sauna installations
  • Installers and electricians fitting saunas in residential, commercial or public buildings
  • Sauna and heating appliance manufacturers and prefabricated cabin designers
  • Building inspectors, safety officers and compliance auditors Practical uses: safe selection of equipment, zoning layout, RCD and IP rating specifications, wiring routing, and ensuring compliance with national implementation of IEC 60364.

Related standards

  • IEC 60335-2-53 (safety for sauna heating appliances)
  • IEC 60364-7-701 (locations containing bath tubs or showers)
  • General parts of IEC 60364 (Parts 1–6) for fundamental principles, protection, selection and verification

Keywords: IEC 60364-7-703, sauna cabins, electrical installations, protection against electric shock, RCD, IP rating, heat-resistant wiring, sauna heater safety.

Frequently Asked Questions

IEC 60364-7-703 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Electrical installations of buildings - Part 7-703: Requirements for special installations or locations - Rooms and cabins containing sauna heaters". This standard covers: The particular requirements of this part of IEC 60364 apply to: - sauna cabins erected on site, e.g. in a location or in a room; - the room where the sauna heater is, or the sauna heating appliances are installed. In this case the whole room is considered as the sauna. They do not apply to prefabricated sauna cabins complying with a relevant equipment standard. Where facilities like cold water basins or showers, etc. are installed, the requirements of Part 7-701 also apply. The main technical changes with respect to the previous edition concern the updating of requirements to take into account the evolution in sauna equipment, with particular emphasis on prefabricated cabins. In addition, in response to a need from installers, there has been some elaboration on temperature repartition in saunas as well as protection against electric shock. Finally, the four zones described in the first edition have now been reduced to three zones.

The particular requirements of this part of IEC 60364 apply to: - sauna cabins erected on site, e.g. in a location or in a room; - the room where the sauna heater is, or the sauna heating appliances are installed. In this case the whole room is considered as the sauna. They do not apply to prefabricated sauna cabins complying with a relevant equipment standard. Where facilities like cold water basins or showers, etc. are installed, the requirements of Part 7-701 also apply. The main technical changes with respect to the previous edition concern the updating of requirements to take into account the evolution in sauna equipment, with particular emphasis on prefabricated cabins. In addition, in response to a need from installers, there has been some elaboration on temperature repartition in saunas as well as protection against electric shock. Finally, the four zones described in the first edition have now been reduced to three zones.

IEC 60364-7-703 is classified under the following ICS (International Classification for Standards) categories: 29.020 - Electrical engineering in general; 91.140.50 - Electricity supply systems. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase IEC 60364-7-703 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.

Standards Content (Sample)


SLOVENSKI SIST IEC 60364-7-703:2006

STANDARD
september 2006
Električne inštalacije zgradb – 7-703. del: Zahteve za posebne inštalacije ali
lokacije – Sobe in kabine s savna greli
Electrical installations of buildings - Part 7-703: Requirements for special
installations or locations - Rooms and cabins containing sauna heaters
ICS 91.140.50; 97.100.10 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

NORME CEI
INTERNATIONALE
IEC
60364-7-703
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2004-10
Installations électriques dans les bâtiments –
Partie 7-703:
Exigences pour les installations
ou emplacements spéciaux –
Locaux contenant des radiateurs pour saunas

Electrical installations of buildings –
Part 7-703:
Requirements for special installations
or locations –
Rooms and cabins containing sauna heaters

 IEC 2004 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 any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch
CODE PRIX
H
PRICE CODE
Commission Electrotechnique Internationale
International Electrotechnical Commission
МеждународнаяЭлектротехническаяКомиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60364-7-703 © IEC:2004 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSTALLATIONS OF BUILDINGS –

Part 7-703: Requirements for special installations or locations –
Rooms and cabins containing sauna heaters

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.
International Standard IEC 60364-7-703 has been prepared by IEC technical committee 64:
Electrical installations and protection against electric shock.
This second edition cancels and replaces the first edition published in 1984 and constitutes a
technical revision.
The main technical changes with respect to the previous edition concern the updating of
requirements to take into account the evolution in sauna equipment, with particular emphasis
on prefabricated cabins. In addition, in response to a need from installers, there has been
some elaboration on temperature repartition in saunas as well as protection against electric
shock. Finally, the four zones described in the first edition have now been reduced to three
zones.
60364-7-703 © IEC:2004 – 5 –
The text of this standard is based on the following documents:
FDIS Report on voting
64/1404/FDIS 64/1417/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 60364 consists of the following parts, under the general title Electrical installations of
buildings:
Part 1: Fundamental principles, assessment of general characteristics, definitions
Part 2: Void
Part 3: Void
Part 4: Protection for safety
Part 5: Selection and erection of electrical equipment
Part 6: Verification
Part
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...