Yes, it's me again!
When I wire my new extractor fan in the bathroom, I will be installing a fan isolator switch outside the bathroom.
I will need to bring the following both in and out... Permanent live Switched live Neutral Earth
The only three core and earth I can find has the colours Brown Black Grey (Bare earth)
This, I understand is the colours for three phase wiring? (Although Screwfix suggest it is used in two way lighting)
My house has both the old colours (Red/Black) and the new (Brown/Blue) (With the appropriate sticker on the consumer units, of course)
Can my new circuit use both the old and the new colours in the same cable, like this... Brown - Permanent live Black - Neutral Grey - Switched Live, sleeved in red or brown
If not (and I expect not) do I just sleeve with blue and brown each end of the cable?
Ta!