we have had huge problems wit our RCD tripping in the house on our farm for no reason. We live on a farm and we have a 3 phase supply comming into a shed in a main consumer unit. it then goes of the the separate buildings. The main buildings like the house and the workshop have a the 3 phases and small buildings only have 1 or 2. The house and workshop then have their own consumer units with 3 phase RCD's in them. Everything is on the RCD's even the lights (this did once save me when changing a light bulb).
The house RCD started tripping about 2 months ago so recently we got an electrician in. He leakage tested everwhere and had floorboards up and all the socket faces off. We have been quoted £200ish for a new RCD device but today we noticed that when you use motorized equipment in the workshop it trips off in the house. (the workshop is all working fine and trips off when tested).
You name it really, electric drills, pressure washer, angle grinder, compressor.
If we have our fridge, freezer and oven off it trips out less.
What do you recon?
Thanks Tim Fish