DIY Doctor

Main navigation

cable colours and sleeving

Postby geswhu » Tue Mar 18, 2008 1:02 pm

Hi i have installed a single phase supply using a three core swa cable. the core colours are brown,black, grey. I have used the brown as the phase,the black as th neutral and put blue sleeving on both ends.The grey is used as the cpc and again sleeved green / yellow both ends .I have been refused a test cert and told to swap the black and grey .Is this true and why.[/b]
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Tue Mar 18, 2008 12:52 pm


Simply Build It

Postby kuzz » Tue Mar 18, 2008 9:03 pm

If the cable core was pink with yellow spots, as long as it's sleeved correctly it wouldn't be an issue. If the infomation you give is correct it seems like a very odd request.
Rank: Ganger
Progress to next rank:
Posts: 134
Joined: Sat Nov 03, 2007 3:37 pm

Postby sparx » Tue Mar 18, 2008 11:03 pm

Hi, it has been well documented from IET, ECA ect. that in order to try to break the mental links between black & Neutral the recommended scheme is to sleeve Grey as Neutral (BLUE) & sleeve black as Earth, so yes it is not approved as done BUT as Kuzz says as long as identified correctly which could be by numbered tags even eg L1, L2, N, it should not matter.
Rank: Project Manager
Posts: 2166
Joined: Wed Mar 21, 2007 8:33 pm
Location: The fifth continent.

Postby ericmark » Wed Mar 19, 2008 12:06 pm

514.4.3 PEN conductor
A PEN conductor shall. when insulated. be marked by one of the following methods:
(i) Green-and-yellow throughout its length with. in addition. blue markings at the terminations
(ii) Blue throughout its length with. in addition. Green-and-yellow markings at the terminations.
514.4.2 Protective conductor
The bi-colour combination green-and-yellow shall be used exclusively for identification of a protective conductor and this combination shall not be used for any, other Purpose.
Are the only places where you can't sleeve or tape the ends.
I therefore can see nothing wrong with what you have done.

Postby ericmark » Wed Mar 19, 2008 5:20 pm

I see you also posted on IET web site and all answers seem to be the same!

Postby geswhu » Wed Mar 19, 2008 7:16 pm

Hi thanks for all your help I have read everything that is written on core colours and they all come back to the answer that it does not matter as long as the ends are identified with the correct colours.Thanks again for all your help.
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Tue Mar 18, 2008 12:52 pm

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics