SIST EN 61386-21:2004

SLOVENSKI STANDARD
SIST EN 61386-21:2004
01-september-2004
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SIST EN 50086-2-1:1999
SIST EN 50086-2-1:1999/A11:2001
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Conduit systems for cable management -- Part 21: Particular requirements - Rigid
conduit systems
Elektroinstallationsrohrsysteme für elektrische Energie und für Informationen -- Teil 21:
Besondere Anforderungen für starre Elektroinstallationsrohrsysteme
Systèmes de conduits pour la gestion du câblage -- Partie 21: Règles particulières -
Systèmes de conduits rigides
Ta slovenski standard je istoveten z: EN 61386-21:2004
ICS:
29.120.10 ,QãWDODFLMVNHFHYL]D Conduits for electrical
HOHNWULþQHQDPHQH purposes
SIST EN 61386-21:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 61386-21:2004

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SIST EN 61386-21:2004
EUROPEAN STANDARD EN 61386-21
NORME EUROPÉENNE
EUROPÄISCHE NORM February 2004

ICS 29.120.10 Supersedes EN 50086-2-1:1995 + A11:1998
Incorporates Corrigendum April 2004


English version


Conduit systems for cable management
Part 21: Particular requirements –
Rigid conduit systems
(IEC 61386-21:2002)


Systèmes de conduits pour la gestion  Elektroinstallationsrohrsysteme für
du câblage elektrische Energie und für Informationen
Partie 21: Règles particulières – Teil 21: Besondere Anforderungen für
Systèmes de conduits rigides starre Elektroinstallationsrohrsysteme
(CEI 61386-21:2002) (IEC 61386-21:2002)






This European Standard was approved by CENELEC on 2003-09-23. 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.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden,
Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 61386-21:2004 E

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SIST EN 61386-21:2004
EN 61386-21:2004 - 2 -
Foreword
The text of the International Standard IEC 61386-21:2002, prepared by SC 23A, Cable management
systems, of IEC TC 23, Electrical accessories, was submitted to the Unique Acceptance Procedure
and was approved by CENELEC as EN 61386-21 on 2003-09-23.
This European Standard supersedes EN 50086-2-1:1995 + corrigendum February 2001 + A11:1998 +
A11:1998/corrigendum February 2001.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2004-10-01
– latest date by which the national standards conflicting
(dow) 2008-06-30
with the EN have to be withdrawn
This part 21, which specifies particular requirements for rigid conduit systems, is to be used in
conjunction with EN 61386-1:2004.
This part 21 supplements or modifies the corresponding clauses of EN 61386-1. Where a particular
clause or subclause of part 1 is not mentioned in this part 21, that clause or subclause applies as far as
is reasonable. Where this part 21 states "addition", "modification" or "replacement", the relevant text of
part 1 is to be adapted accordingly.
Subclauses, tables and figures which are in addition to those in part 1 are numbered starting with 101.
Additional annexes are lettered AA, BB, etc.
A conduit system which complies with this standard is deemed safe for use when installed in accordance
with national wiring regulations, whilst applying the manufacturer's installation instructions and conduit
classification.
In this standard, the following print types are used:
- requirements: in roman type;
- test specifications: in italic type;
- notes: in smaller roman type.
Annexes ZAA and ZBB have been added by CENELEC.
The contents of the corrigendum of April 2004 have been included in this copy.
__________
Endorsement notice
The text of the International Standard IEC 61386-21:2002 was approved by CENELEC as a European
Standard without any modification.
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SIST EN 61386-21:2004
- 3 - EN 61386-21:2004
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications
Annex ZA of part 1 is applicable.
___________

Annex ZAA
(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 European Standard or Harmonization Document.
For the countries in which the relevant special national conditions apply these provisions are
normative, for other countries they are informative.
Clause Special national condition
6.5.2 Finland (Finnish wiring rules SFS 6000-5-52:2002 (= HD 384.5.52 S1))
Flame propagating conduit systems are allowed to be used only if they are
completely enclosed in suitable non-combustible building materials.
United Kingdom (British wiring regulations BS7671: 2001  HD 384).
Flame propagating conduit systems are allowed to be used in buildings only if
they are completely enclosed in suitable non-combustible building materials.
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SIST EN 61386-21:2004
EN 61386-21:2004 - 4 -
Annex ZBB
(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 European Standard falls under Directive 73/23/EEC.
NOTE (from CEN/CENELEC IR Part 2, 2.17)  Where standards fall under EC Directives, it is the view of the Commission of the
European Communities (OJ No C 59, 1982-03-09) that the effect of the decision of the Court of Justice in Case 815/79
Cremonini/Vrankovich (European Court Reports 1980, p. 3583) is that compliance with A-deviations is no longer mandatory and
that the free movement of products complying with such a standard should not be restricted within the EC except under the
safeguard procedure provided for in the relevant Directive.
A-deviations in an EFTA-country are valid instead of the relevant provisions of the European
Standard in that country until they have been removed.
Clause Deviation
6.1.1.2 and France
6.1.2.2 (Decree from Equipment and Accommodation Minister for low voltage
installations dated 22 October 1969)
6.1.1.2, Spain
6.1.1.3, (Real Decreto 842/2002 dated 2 August 2002 and Real Decreto 401/2003 dated
6.1.2.2 and 14 May 2003)
6.5.2
Classifications not allowed.
6.2.1 Austria
(Austrian Electrotechnical Law (ETG) BGBl. 106/1992 dated February 12, 1993 and

Austrian Electrotechnical Decree (ETV 2002) BGBl. 222, Part II dated June 13, 2002)
France
(Decree from Equipment and Accommodation Minister low voltage installations dated
22 October 1969)
Classification 1X according to Table 1 not allowed.
6.5.2 Austria
(Austrian Electrotechnical Law (ETG) BGBl. 106/1992 dated February 12, 1993 and
Austrian Electrotechnical Decree (ETV 2002) BGBl. 222, Part II dated June 13, 2002)
Classification is not allowed for installations in buildings.
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SIST EN 61386-21:2004
NORME CEI
INTERNATIONALE IEC
61386-21
INTERNATIONAL
Première édition
STANDARD
First edition
2002-02
Systèmes de conduits
pour installations électriques –
Partie 21:
Règles particulières –
Systèmes de conduits rigides
Conduit systems for cable management –
Part 21:
Particular requirements –
Rigid conduit systems
 IEC 2002 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
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PRICE CODE
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International Electrotechnical Commission
Международная Электротехническая Комиссия
Pour prix, voir catalogue en vigueur
For price, see current catalogue

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SIST EN 61386-21:2004
61386-21  IEC:2002 – 3 –
CONTENTS
FOREWORD.5
1 Scope.9
2 Normative references.9
3 Definitions .9
4 General requirements .9
5 General conditions for tests .9
6 Classification .9
7 Marking and documentation .9
8 Dimensions.11
9 Construction .13
10 Mechanical properties.13
11 Electrical properties .17
12 Thermal properties .17
13 Fire hazard .19
14 External influences .19
15 Electromagnetic compatibility.19
Figure 101 – Bending apparatus for metallic and composite conduits.21
Figure 102 – Gauge for checking the minimum inside diameter of the conduit system
after impact, bending, collapse and resistance to heat tests.23
Figure 103 – Bending apparatus for non-metallic and composite conduit.25
Figure 104 – Arrangement for collapse test .27
Table 101 – Thread lengths.11
Table 102 – Maximum entry diameter and minimum entry length details .13

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SIST EN 61386-21:2004
61386-21  IEC:2002 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONDUIT SYSTEMS FOR CABLE MANAGEMENT –
Part 21: Particular requirements – Rigid conduit 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 co-operation 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
organi
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