Discussion regarding mixed colours in CU

[HappyHippyDad]

I am having a discussion with a friend who is currently training to be an electrician. He is adamant that you cannot mix colours withing a consumer unit. He says the regulations state it and he will find the reg number (we haven't got one to hand at the moment).

I have always been under the impression that it is ok to mix the colours (i.e using brown/blue for a new circuit in a consumer unit that contains red/black) and then place the required sticker on the CU. We only have the Onsite guide to hand which just states the 'sticker' should be placed on the CU, nothing is mentioned about the wiring in the CU itself.

Is there a regulation that states you cannot mix colours in a CU?

I can't believe there is!

 

[Simonslimline]

Just stick a mixed colours warning sticker on the board and be done wirth it. Not that any spark should need a sticker to know which core is what!!!

 

[Dave OCD]

Really?.

I was joking Dave. :yesnod:

 

[Dave OCD]

On a slightly related note if I do anything to an existing switch that has the old colours and no sleeve on the black,yellow or blue I'll put a bit of red sleeve on,not brown. Still have a few yards of that left.

 

[7029 dave]

I was joking Dave. :yesnod:

NO NO my response was to the op Dave.

 

[Dave OCD]

NO NO my response was to the op Dave.

Ah sorry mate !

 

[Simonslimline]

I wonder if he has found the reg number yet lol.

 

[HappyHippyDad]

I wonder if he has found the reg number yet lol.

Nope, still waiting

 

[cliffed]

Mixed colours were way back,fight against racialism.

 

[Deleted member 26818]

This is probably something to do with when the change occurred.
There was a 6 month period where either the old or the new colours could be used for new installations, but not a mixture.