International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 60423:2007
Title Conduit systems for cable management - Outside diameters of conduits for electrical installations and threads for conduits and fittings
Project Number 20620
Abstract/Scope This International Standard specifies outside diameters for conduits used in electrical installations or in communication systems and the dimensional requirements for threads. It also specifies the dimensional requirements for threads used in associated fittings. It is not applicable to extra heavy-duty electrical rigid steel conduits specified in IEC 60981. This third edition cancels and replaces the second edition published in 1993. This edition constitutes a technical revision. The following main changes have been made to the second edition: -revised figures and tables plus editorial and normative reference updates -conduit range increased to 110 mm outside diameter.


Current Stage code 6060
Current Stage code date 2007-10-17
Current Stage code deadline 2008-07-01
Deadline date for vote  


Directive(s) LVD (2006/95/EC)
Order Voucher  


IEC Technical Body IEC/SC 23A
Reference Document IEC 60423:2007 (EQV)
ICS 29.120.10 - Conduits for electrical purposes
Keywords Conduit system; Cable management; Outside diameter; Thread; Fitting
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2007-10-17 2008-07-01 export to doc file  EN  FR  DE
5099 2007-10-01 2007-12-01  
5061 2007-08-28 2007-10-01  
5060 2007-07-31 2007-08-09 export to doc file  EN
5020 2007-05-25 2007-07-27  
4099 2006-09-08 2007-03-31  
5060 2006-09-05 2006-09-19 export to doc file  EN
5020 2006-03-24 2006-09-01  
1090 2006-03-21 2006-03-24  

Implementation Dates

date of Ratification (DOR) (1) 2007-10-01
date of Availability (DAV) (2) 2007-10-17
date of Announcement (DOA) (3) 2008-01-01
date of Publication (DOP) (4) 2008-07-01
date of Withdrawal (DOW) (5) 2010-10-01


Supersedes EN 60423:1994
Superseded by  
Normative reference (6) ISO 68-1:1998
ISO 965-1:1998
ISO 1502:1996

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.