I’ve got an old (10-15yrs) CU and all circuits are protected by a 32ma RCD. My upstairs lighting circuit is tripping the RCD.
If I switch off the 6amp MCB that protects the lights the RCD resets. I can then switch the MCB on and everything is OK but then the RCD trips again after a couple of minutes.
(SOMETIMES it will actually reset if the MCB is left switched on; everything is then OK for a couple of minutes and then it trips again.)
Could anyone give me any idea what the most methodical way to trace the fault is, please? We’ve got quite a few metallic light fittings so I’m guessing this may be a good place. I’m a trainee at the moment so have some knowledge but would like to know how you qualified and experienced guys would approach a fault like this. Thanks
If I switch off the 6amp MCB that protects the lights the RCD resets. I can then switch the MCB on and everything is OK but then the RCD trips again after a couple of minutes.
(SOMETIMES it will actually reset if the MCB is left switched on; everything is then OK for a couple of minutes and then it trips again.)
Could anyone give me any idea what the most methodical way to trace the fault is, please? We’ve got quite a few metallic light fittings so I’m guessing this may be a good place. I’m a trainee at the moment so have some knowledge but would like to know how you qualified and experienced guys would approach a fault like this. Thanks