So today I wanted to add another switch in a house.
The extra switch would need to now include an intermediate due to it being already 2wY.
now when I took the switches off, one switch the common has just a single sheath core, the L1 and L2 are a 2 core cable L1 being Red and L2 being black.
This is exactly the same in the other switch.
I thought this must mean there is a JB somewhere ? In the light fitting there is 3 T&E, and 1 single cable which goes into the lamp live!
I just can’t understand how this could be wired?
Any ideas?
