IEC TR 61200-52:2013

IEC/TR 61200-52 ®
Edition 2.0 2013-07
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
Electrical installation guide –
Part 52: Selection and erection of electrical equipment – Wiring systems

Guide pour les installations électriques –
Partie 52: Choix et mise en œuvre des matériels électriques – Canalisations

IEC/TR 61200-52:2013
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IEC/TR 61200-52 ®
Edition 2.0 2013-07
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
Electrical installation guide –

Part 52: Selection and erection of electrical equipment – Wiring systems

Guide pour les installations électriques –

Partie 52: Choix et mise en œuvre des matériels électriques – Canalisations

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 29.060.01; 91.140.50 ISBN 978-2-8322-0882-3

– 2 – TR 61200-52 © IEC:2013
CONTENTS
FOREWORD . 3
520 Introduction . 5
520.1 Scope . 5
520.2 Normative references . 5
521 Types of wiring system . 6
521.6 Conduit systems, cable ducting systems, cable trunking systems, cable
tray systems and cable ladder systems . 6
522 Selection and erection of wiring systems in relation to external influences . 7
522.4 Presence of solid foreign bodies . 7
522.6 Impact . 7
522.8 Other mechanical stresses . 7
522.8.101 Reduction of the risk of short-circuit or earth fault . 7
522.11 Solar radiation and ultraviolet radiation . 7
523 Current-carrying capacities . 8
526 Electrical connections . 8
526.4 Maximum temperatures of terminals in normal service conditions . 8
526.4.101 General . 8
526.4.201 Limitation of temperature at a terminal . 8
526.4.301 Limitation of the effects of temperature at a terminal in
normal service . 9
526.8 Connection of multiwire, fine wire and very fine wire conductors . 10
528 Proximity of wiring systems to other services . 10
528.2 Proximity of communication cables. 10
Annex B, Current-carrying capacity . 11
Annex I (informative) List of notes concerning certain countries . 12
Bibliography . 13

Table 52A – Cable surrounded by thermal insulation . 11

TR 61200-52 © IEC:2013 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSTALLATION GUIDE –

Part 52: Selection and erection of electrical equipment –
Wiring systems
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC 61200-52, which is a technical report, 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 1993, and constitutes
a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
– 4 – TR 61200-52 © IEC:2013
a) the scope has been modified; whilst the Guide does not form part of the IEC 60364 series,
it serves as a supplement to IEC 60364-5-52:2009 and explains the rules so as to facilitate
the design, selection, erection and maintenance of wiring systems;
b) guidance associated with conduit systems, cable ducting systems, cable trunking systems,
cable tray systems and cable ladder systems has been added giving, for example,
recommended maximum straight lengths of conduit to ease the installation circuit wiring;
c) guidance associated with selection and erection of wiring systems in relation to external
influences has been extended to cover impact, and other mechanical stresses.
d) guidance for grouping of cables has been added.
e) guidance on maximum temperatures of terminals in normal service conditions has been
extended;
f) guidance on the connection of multi wire, fine wire and very fine wire conductors has been
added;
g) guidance on proximity of communication cables has been added;
h) guidance on cables in contact with thermal insulation has been added.
This technical report serves as a supplement to IEC 60364-5-52:2009 and follows the
numbering of that standard.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
64/1875/DTR 64/1887/RVC
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.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the stability 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.
...