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Discuss New single light circuit tripping RCCB on socket circuit. in the Electrical Forum area at ElectriciansForums.net

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I'm not an electrician, but have been successfully doing DIY electrical work for 50 years, including complete house rewiring before the days of RCCBs.

I've just moved to a house built in 2000, and one cupboard (ironically the one with the consumer unit in it) does not have a light. I installed a simple circuit direct from the lighting MCB to a pull cord and a pendant fitting. There is no RCCB covering the lighting circuits. Everything is fine till I switch on the light, then the RCCB for the socket circuits trips. It doesn't trip the MCB. If I use a tungsten bulb, the filament flashes briefly, then goes out, but if I use an LCD bulb, the bulb stays on after the RCCB trips (remember, the RCCB that is tripping only covers the sockets).

I've carefully checked all my wiring, and can't see any problem. I've swapped the bulb holder with another new one, to no effect. The wiring in the ceiling rose clearly looks OK. The pull cord is single pole, and I've connected the earth, and used a strip connector for the neutral. All the cabling is new.

Any ideas, please?
 
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  • Thread Starter Thread Starter
  • #6
Thanks Westward 10, I didn't think it would matter, so just connected to the nearest one. I'll go back and check, and try that.

I'm afraid my experience doesn't include RCCBs, and the only testing equipment I have is an electrician's screwdriver and one of those plugs that checks the wiring of a socket :(.
 
  • Thread Starter Thread Starter
  • #7
Wow, thanks Westward :thumbsup:. Such a simple solution, that would never have occurred to me. So far that's sorted it - if it recurs I'll let you know.

Many thanks,

Colin.
 

littlespark

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Reply to New single light circuit tripping RCCB on socket circuit. in the Electrical Forum area at ElectriciansForums.net

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