OP
Adam W
Well I use brown for switched live and black for auxiliary live (permanent feed to emergency fittings) like it's intended for.
If most of the lights aren't emergency fittings the colours in the flex will be brown, blue and green & yellow, so you use brown for the switched live just the same as you do throughout the rest of the installation.
In the emergency fittings the colours might be brown, black, blue, and green & yellow - the extra colour being black to be used for the extra terminal you've now got (auxiliary live).
There was me thinking it was obvious...
If most of the lights aren't emergency fittings the colours in the flex will be brown, blue and green & yellow, so you use brown for the switched live just the same as you do throughout the rest of the installation.
In the emergency fittings the colours might be brown, black, blue, and green & yellow - the extra colour being black to be used for the extra terminal you've now got (auxiliary live).
There was me thinking it was obvious...