SIST EN 60423:2008

SLOVENSKI STANDARD
01-januar-2008
1DGRPHãþD
SIST EN 60423:1999
Kanalski sistemi za urejanje okablenja - Zunanji premeri kanalov za kabelske
inštalacije in navoje kanalov in fitingov (IEC 60423:2007)
Conduit systems for cable management - Outside diameters of conduits for electrical
installations and threads for conduits and fittings (IEC 60423:2007)
Elektroinstallationsrohrsysteme für elektrische Energie und für Informationen -
Außendurchmesser von Elektroinstallationsrohren und Gewinde für
Elektroinstallationsrohre und deren Zubehör (IEC 60423:2007)
Systemes de conduits pour la gestion du câblage - Diametres extérieurs des conduits
pour installations électriques et filetages pour conduits et accessoires (IEC 60423:2007)
Ta slovenski standard je istoveten z: EN 60423:2007
ICS:
29.120.10 ,QãWDODFLMVNHFHYL]D Conduits for electrical
HOHNWULþQHQDPHQH purposes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 60423
NORME EUROPÉENNE
October 2007
EUROPÄISCHE NORM
ICS 29.120.10 Supersedes EN 60423:1994

English version
Conduit systems for cable management -
Outside diameters of conduits for electrical installations
and threads for conduits and fittings
(IEC 60423:2007)
Systèmes de conduits  Elektroinstallationsrohrsysteme
pour la gestion du câblage - für elektrische Energie
Diamètres extérieurs des conduits
und für Informationen -
pour installations électriques Außendurchmesser
et filetages pour conduits et accessoires von Elektroinstallationsrohren
(CEI 60423:2007) und Gewinde für Elektroinstallationsrohre
und deren Zubehör
(IEC 60423:2007)
This European Standard was approved by CENELEC on 2007-10-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the 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

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60423:2007 E
Foreword
The text of document 23A/541/FDIS, future edition 3 of IEC 60423, prepared by SC 23A, Cable
management systems, of IEC TC 23, Electrical accessories, was submitted to the IEC-CENELEC parallel
vote and was approved by CENELEC as EN 60423 on 2007-10-01.
This European Standard supersedes EN 60423:1994.
The following main changes have been made to EN 60423:1994:
– revised figures and tables plus editorial and normative reference updates;
– conduit range increased to 110 mm outside diameter.
The following dates were fixed:

– latest date by which the EN has to be implemented

at national level by publication of an identical
(dop) 2008-07-01
national standard or by endorsement

– latest date by which the national standards conflicting
(dow) 2010-10-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60423:2007 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61386 NOTE Harmonized in EN 61386 series (not modified).
__________
– 3 – EN 60423:2007
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year
ISO 68-1 1998 ISO general purpose screw threads - Basic – –
profile -
Part 1: Metric screw threads
ISO 965-1 1998 ISO general-purpose metric screw threads - – –
Tolerances -
Part 1: Principles and basic data

ISO 1502 1996 ISO general-purpose metric screw threads - – –
Gauges and gauging
IEC 60423
Edition 3.0 2007-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Conduit systems for cable management – Outside diameters of conduits for
electrical installations and threads for conduits and fittings

Systèmes de conduits pour la gestion du câblage – Diamètres extérieurs des
conduits pour installations électriques et filetages pour conduits et accessoires

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
M
CODE PRIX
ICS 29.120.10 ISBN 2-8318-9268-6

– 2 – 60423 © IEC:2007
CONTENTS
FOREWORD.3
INTRODUCTION.5

1 Scope.6
2 Normative references.6
3 Outside diameters and threads .6
4 Gauges.6
5 Samples of conduit .7

Bibliography .13

Figure 1 – Basic profile of screw threads .9
Figure 2 – Gauges for checking maximum outside diameters of threadable conduits.10
Figure 3a – Gauges for checking minimum outside diameters of rigid metallic
threadable conduits.11
Figure 3b – Gauges for checking minimum outside diameters of threadable conduits
other than rigid metallic .12
Figure 3 – Gauges for checking minimum outside diameters of threadable conduits.12

Table 1 – Outside diameters for threadable conduits and thread details for conduits and
associated fittings .8
Table 2 – Outside diameters for non-threadable conduit .9

60423 © IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_____________
CONDUIT SYSTEMS FOR CABLE MANAGEMENT –
OUTSIDE DIAMETERS OF CONDUITS FOR ELECTRICAL
INSTALLATIONS AND THREADS FOR CONDUITS AND FITTINGS

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
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