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Colour of Wiring in Singles for PVC Conduit

William Mackenzie

I'm in the process of wiring up sockets and lighting to a new consumer unit in my shed. I plan on doing most of the wiring work myself before getting in a proper electrician that can tell me everything I've done wrong.

 

One mistake I want to avoid is making sure I actually wire it with suitable cable in the first place. I understand I'll need to use singles as I'll be using PVC conduit but as I'm only a DIYer and this is just a small installation I reckon I'll need only 25m of each colour cable but it seems that singles tend to be sold in 50/100m drums only.

 

My question is am I able to get away with wiring the whole thing with just one colour of cable i.e. all in black then sleeving or taping the terminations to indicate the correct colour of wire i.e. brown/blue/earth? I could also indicate the colour at inspection points as well to make it a little clearer.

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    I plan on doing most of the wiring work myself before getting in a proper electrician that can tell me everything I've done wrong.

    Just be aware of building regulations in you're in the UK - specifically Part P (if you're in England/Wales, slightly different in NI/Scotland) - since this work seems notifiable your options if not using a registered competent person to do the work is to either:

    • Before work begins, appoint a registered third party to oversee the work (which is a specific registration over and above the normal registered competent person, which I gather relatively few electricians hold).
    • Before work begins, notify a building control body (usually your local authority's building control dept.) - paying the appropriate fee (usually several hundred pounds).

    (I'm not saying that the procedures always get followed to the letter, but you should be aware of it, as it can come back to bite you e.g. at house sale time)

      - Andy.

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    I plan on doing most of the wiring work myself before getting in a proper electrician that can tell me everything I've done wrong.

    Just be aware of building regulations in you're in the UK - specifically Part P (if you're in England/Wales, slightly different in NI/Scotland) - since this work seems notifiable your options if not using a registered competent person to do the work is to either:

    • Before work begins, appoint a registered third party to oversee the work (which is a specific registration over and above the normal registered competent person, which I gather relatively few electricians hold).
    • Before work begins, notify a building control body (usually your local authority's building control dept.) - paying the appropriate fee (usually several hundred pounds).

    (I'm not saying that the procedures always get followed to the letter, but you should be aware of it, as it can come back to bite you e.g. at house sale time)

      - Andy.

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