Old and new cable colours.

[trialscot]

Hi,
We're having a small extension built and obviously the wiring will be modern colours. Is it OK to have the original part of the house on red/black wiring and the new part modern colours (brown/blue)?.

In Scotland, if it makes any difference.

 

[EdwardCurrent]

Hello,

A combination of different coloured conductors is fine, so long as you put a warning notice on the consumer unit saying so.


Ed

 

[stephenf8542]

It makes no difference at all,though your electrician should put a sticker on the box stating that the installation uses both old and new colours

 

[TicklyT]

Should be OK, providing the existing wiring isn't already past it's 'sell by date', and in need of replacement / upgrading.

The CU should be marked up with a label "CAUTION - This installation uses colour codes to two versions of BS7671" so nobody gets caught out.

 

[trialscot]

Very many thanks again guys.