Hello, i am currently doing some work on an outbuilding, i am in training at the moment, i am supervised etc but i really wanted to find out for myself why the lighting circuit keeps tripping. its only a small CCU with a mian RCD protecting an MCB for the Ring and an MCB for the lights, i am able to turn the RCD on, all ok, then the ring MCB ..ok but when i turn the Lights MCB on the RCD trips, i just wondered if you could give me a couple of steps on where to find the fault. i have all the relevent test equipment.
Thanks in advance
B
Thanks in advance
B