The downstaits socket circuit is tripping the RCD on my neighbours house and I can't find the problem. I disconnected the earth at the CU and turned the circuit on and it was fine so I know the problem is with the earth. It only trips the RCD when the MCB is turned on so i'm assuming it is just an earth fault and not a earth-neutral short.
I have unplugged all appliances and it was still tripping. I disconnected all sockets and sepperated the cables and am confident I have found the responsible cable, I did a insulation resitance test on the cable at 250v and the reading was 347 ohms.
The circuit was fine when they went to be last night and when they woke up this morning it had tripped.
Any ideas what could have caused this?
Thanks
I have unplugged all appliances and it was still tripping. I disconnected all sockets and sepperated the cables and am confident I have found the responsible cable, I did a insulation resitance test on the cable at 250v and the reading was 347 ohms.
The circuit was fine when they went to be last night and when they woke up this morning it had tripped.
Any ideas what could have caused this?
Thanks