S
se7aq
Hello all. A customer replaced a dimmer on his lighting circuit, ever since then the RCD keeps tripping and he called me. I have now removed ALL switches (one at a time) and light bulbs however it is still tripping. Using a Wander lead I got readings from the L, N, and E from the CU to the ceiling roses. At one point I got a reading from the ceiling L to an L on switch line but the L was removed from the ceiling rose at that point, so somehow it was connected. I checked it again the following day (due to time restraints) and there was now no reading. I will be looking in the loft on Monday to find the lighting cable from the CU and go from there (loft was chockablock at the time and customer is clearing for me for Monday) to see if any pressure is being put on the lighting circuit cable but apart from that I am stuck and feel like a bit of an idiot, can anyone help?