PNW 46A-881

SLOVENSKI STANDARD
01-februar-2000
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Electrical installation guide - Part 52: Selection and erection of electrical equipment -
Wiring systems
Guide pour les installations électriques - Partie 52: Choix et mise en oeuvre des
matériels électriques - Canalisations
Ta slovenski standard je istoveten z: IEC/TS 61200-52
ICS:
29.060.01 (OHNWULþQHåLFHLQNDEOLQD Electrical wires and cables in
VSORãQR general
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.

RAPPORT CEI
TECHNIQUE IEC
1200-52
TECHNICAL
Première édition
REPORT
First edition
1993-02
Guide pour les installations électriques —
Partie 52:
Choix et mise en oeuvre des matériels
électriques — Canalisations
Electrical installation guide —
Part 52:
Selection and erection of electrical
equipment — Wiring systems
© CEI 1993 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 pro- any form or by any means, electronic or mechanical,
cédé, électronique ou mécanique, y compris la photocopie et including photocopying and microfilm, without permission
in writing from the publisher.
les microfilms, sans l'accord écrit de l'éditeur.
Bureau Central de la Commission Electrotechnique Internationale 3, rue de Varembé Genève, Suisse
Commission Electrotechnique Internationale CODE PRIX
International Electrotechnical Commission
PRICE CODE
IEC MetHpyHapopIlaR 3neKTpoTexHw4ecKaR HOMHCCHR
vigueur
Pour prix, voir catalogue en •
For price, see current catalogue

1200-52 © IEC: 1993 - 3 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
ELECTRICAL INSTALLATION GUIDE —
Part 52: Selection and erection of electrical equipment —
Wiring systems
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 cooperation 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 subjects dealt with.
They have the form of recommendations for international use published in the form of standards, technical
3)
reports or guides and they are accepted by the National Committees in that sense.
In order to promote international unification, IEC National Committees undertake to apply IEC International
4)
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.
The main task of IEC technical committees is to prepare International Standards. In excep-
tional circumstances, a technical committee may propose the publication of a technical
repo rt of one of the following types:
• type 1, when the required suppo rt cannot be obtained for the publication of an Inter-
rts;
national Standard, despite repeated effo
• type 2, when the subject is still under technical development or where for any other
reason there is the future but not immediate possibility of an agreement on an Inter-
national Standard;
type 3, when a technical committee has collected data of a different kind from that
•
which is normally published as an International Standard, for example "state of the a rt".
Technical reports of types 1 and 2 are subject to review within three years of publication to
decide whether they can be transformed into International Standards. Technical reports of
type 3 do not necessarily have to be reviewed until the data they provide are considered
to be no longer valid or useful.
IEC 1200-52, which is a technical report of type 2, has been prepared by IEC technical
committee 64: Electrical installations of buildings.

1200-52 ©IEC: 1993 - 5 -
The text of this technical report is based on the following documents:
Six Months' Rule Report on Voting
64(00)199 64(00)215
Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.

— 7 —
1200-52 © IEC: 1993
INTRODUCTION
When designing an installation or during initial verification, it is sometimes observed that
the temperatures reached by interfaces between terminals and conductors are higher than
those which could be withstood by insulation in normal service.
In this case, precautions shall be taken so that the temperature attained by terminals in
normal service shall not impair the effectiveness of the insulation of conductors connected
to them or supporting them. See IEC 364-5-52.

1200-52 © IEC: 1993 - 9 -
ELECTRICAL INSTALLATION GUIDE –
Part 52: Selection and erection of electrical equipment –
Wiring systems
52.1 General
52.1.1
Scope
is for use as a guide for electrical installations. It is applicable to the
This technical repo rt
limitation of temperature rises of connecting inte rfaces.
52.1.2 Normative references
The following normative documents contain provisions which, through reference in this
of IEC 1200. At the time of publication, the editions
text, constitute provisions of this pa rt
rties to agree-
indicated were valid. All normative documents are subject to revision, and pa
of IEC 1200 are encouraged to investigate the possibility of
ments based on this pa rt
applying the most recent editions of the normative documents indicated below. Members
of IEC and ISO maintain registers of currently valid International Standa
...