by ericmark »
Wed Aug 30, 2023 11:13 pm
There are two ways to wire lights, use the switch back box as a junction box, or the ceiling rose as a junction box, the latter is the normal method in the UK, it has some advantages with less volt drop, and power for emergency lights and ceiling fans. But there is a inductive and capacitive linking with the switch wires, and often no neutral at the switch so using modern electronic switches becomes a problem, but there are ways around the problem.
However the standard ceiling rose has a supply in, a supply out, and a switch wire, in theroy one should have a twin and earth wire to the switch with two brown wires, but normally there is a brown and a blue, and the blue is over sleeved. The sleeve falls off, and people end up getting the switch line and neutral mixed up.
So you need to look at your photos and work out which wire you have got wrong.