Hi John,
Thanks for the feedback. I think this is where the confusion has come from. The
amendment UK wiring regs states that changes have been made to harmonise with
European requirements.
That said there are no requirements for DC cables in EN 60446
Cheers,
Chris Allen
Compliance Specialist
3Com Europe Ltd
Peoplebuilding 2, Peoplebuilding Estate, Maylands Avenue, Hemel Hempstead ,
Hertfordshire HP2 4NW
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_______________________________________________________
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John Woodgate <j...@jmwa.demon.co.uk>
Sent by: emc-p...@ieee.org
16/12/2009 15:07 To
emc-p...@ieee.org
cc
Subject
Re: Cable colours for DC wiring
In message
<ofaa85ddb8.908a78da-on8025768e.004d38c6-8025768e.004dd...@3com.com>,
dated Wed, 16 Dec 2009, chris_al...@3com.com writes:
>Does anyone know if there is a harmonised standard for the colours of
>external DC wiring (mains supply) in Europe?
>
>Particularly interested in the colours for 2 wire earthed DC power
>circuits with positive earth.
See Appendix 7 of BS 7671:2008, IEE Wiring Regulations, 17th edition.
Table 7E gives Positive (earthed) Blue, negative Grey as 'new colours'.
The 'old colours' were Positive (earthed) Black, negative Blue.
Potential for confusion infinite!
The relevant Europe-wide documents are:
HD 308 S2:2001 (harmonized document, not a standard)
BS EN 60445:2000 (marking of terminals)
BS EN 60446:2000 (colours or markings of cables)
--
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
Help stamp out intolerance!
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