RCD tripping at 1/2 x but not 5x

[ngoodson1969]

Hi all,

I have just changed a consumer unit for somebody. When I did the RCD test, they both tripped at half times and 1x but not at 5X.
Also, I had a call last night and they said that one side of the lounge lights causes the RCD to trip.
Any ideas please? Cheers.

Nick

 

[Darkwood]

First thing to do is rule your tester out as been at fault by borrowing one if results although odd are the same then its time to look at the rcd unit, were you testing through a circuit or directly on rcd unit.

 

[ngoodson1969]

Hi,

I went back today and fixed the problem, although not sure how I did it. It was a dimmer switch and I just re-tightened everything and it seemed to resolve itself.
I tested the RCD at a socket outlet.