Help! My RCD trips intermittently, it's driving me beserk this Xmas.
The CU is a Memera 2000. It has a split load with the 2 light rings and the oven on on the non-RCD split and the socket rings on the RCD split.
The RCD seems to trip intermittently... it can be reset for a whole evening so it is not a permanent installation problem like a cable break or a nail through a cable(?). It seems to be more like when there is an excessive draw on the supply eg: our CH boiler or a blender or the lawn mower!
I've tested the house with everything off (and unplugged) and the blender will still trip the RCD. I'm guessing that the lawn mower and the blender have quite noisy motors that draw a surge?
I've been able to have every electrical appliance plugged in and working and the RCD does not trip! (CH, 2 TV's, Fridge, Oven etc).
I thought it might have been my Myson Apollo 30 boiler, since it always seems to trip whenever the heating needs to come on and the CH system has been running cold. When the nightly temperature drops to 4degC in the morning this means that it can trip 3-4 times before it all settles. not much fun having to stand over it at 4am in the morning.
I've read through a number of past topics and I've been able to get some good hints, but no solution or recommended path of investigation.
I'm not an electrician... but I've had no troubles in rewiring/extending sockets or roses or in tracing cables through the house. and i've exhausted all my theories on this....
I've had a electrician / plumber come and inspect the boiler and the RCD and he came up with no definitive answers other than an an leakage to earth. Before I get in the electrician in again what can I do to find the problem or help cut down the diagosis?
Any help appreciated! Thanks!
The CU is a Memera 2000. It has a split load with the 2 light rings and the oven on on the non-RCD split and the socket rings on the RCD split.
The RCD seems to trip intermittently... it can be reset for a whole evening so it is not a permanent installation problem like a cable break or a nail through a cable(?). It seems to be more like when there is an excessive draw on the supply eg: our CH boiler or a blender or the lawn mower!
I've tested the house with everything off (and unplugged) and the blender will still trip the RCD. I'm guessing that the lawn mower and the blender have quite noisy motors that draw a surge?
I've been able to have every electrical appliance plugged in and working and the RCD does not trip! (CH, 2 TV's, Fridge, Oven etc).
I thought it might have been my Myson Apollo 30 boiler, since it always seems to trip whenever the heating needs to come on and the CH system has been running cold. When the nightly temperature drops to 4degC in the morning this means that it can trip 3-4 times before it all settles. not much fun having to stand over it at 4am in the morning.
I've read through a number of past topics and I've been able to get some good hints, but no solution or recommended path of investigation.
I'm not an electrician... but I've had no troubles in rewiring/extending sockets or roses or in tracing cables through the house. and i've exhausted all my theories on this....
I've had a electrician / plumber come and inspect the boiler and the RCD and he came up with no definitive answers other than an an leakage to earth. Before I get in the electrician in again what can I do to find the problem or help cut down the diagosis?
Any help appreciated! Thanks!