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Engineering Education, Resources and Standards
News Release from: Institution of Engineering and Technology
Edited by the Engineeringtalk Editorial
Team on 02 April 2004
Wiring regs take in new conductor
colours
The IEE has now published Amendment 2 to BS7671:2001 (the IEE Wiring Regulations), specifying new cable core colours for all new fixed wiring in UK electrical installations.
The IEE has now published Amendment 2 to BS7671:2001 (the IEE Wiring Regulations), specifying new cable core colours for all new fixed wiring in UK electrical installations After 31st March, electrical installation work must either use the new cable colours or the pre-existing colours, but not both
This article was originally published on Engineeringtalk on 17 Oct 2007 at 8.00am (UK)
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Work commencing after 31st March 2006 will need to comply with the new core colours and must not use the old colours.
Full details of the changes can be found on the IEE website.
They are also detailed within a new, brown-cover version of the IEE Wiring Regulations, published on 31st March and available from the IEE.
For single-phase installations, the colours of red phase and black neutral will be replaced by brown phase and blue neutral, respectively.
The protective conductor will still be green and yellow.
These colours have been used in appliance flexible cables for some time.
For three-phase systems, the phase colours will be brown, black and grey - instead of red, yellow and blue, respectively - and the neutral colour will be blue instead of black.
As with single-phase installations, the protective conductor will be green and yellow.
Alternatively, all three of the phase conductor cores can be coloured brown and marked L1, L2, L3 at the terminations.
To communicate these changes to the public and the professional trades, the British Electrotechnical Committee established a special committee, L/12, which devised a pan-industry awareness campaign.
As part of the campaign, almost 500,000 information leaflets have been distributed within the installation industry and its suppliers to ensure the information is communicated across all relevant sectors.
Copies of the leaflet can be downloaded and printed for free from the IEE website. Request free introductory details about products from Institution of Engineering and Technology ...
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