Hager Split CU, RCD now nuisance tripping.

[Matt Smith]

Sorry pencil pusher no, CU was not tested before the change out, only after the install.

 

[lurch]

can i be your mate, mate? you seriously been had!!

 

[lurch]

"I am therefore unsure if it's tripping on earth leakage or possibly overloading without taking out the mcb ?" . . . oh be advised an RCD does not offer overload protection, only earth leakage. An MCB or RCBO will offer overload protection. . . . . mate


Read more: http://www.electriciansforums.net/e...-rcd-now-nuisance-tripping.html#ixzz2LZY28BYt

 

[Matt Smith]

Yep I do know that RCBO is overload also but I have had peoples laptop chargers cause enough leakage to trip an rcbo or rcd before so am thinking that the combination of a fridge compressor, and washing machine too will be plenty enough leakage to earth to trip out a 30mA rcd..
Thanks so much for making me seem a total cock though guys.. Nice. I mis-typed that's all.

I may seem to have paid too much, but I was willing to cough up so that I knew that the home was tested and safe that's all.

 

[pencilpusher]

Yep I do know that RCBO is overload also but I have had peoples laptop chargers cause enough leakage to trip an rcbo or rcd before so am thinking that the combination of a fridge compressor, and washing machine too will be plenty enough leakage to earth to trip out a 30mA rcd..
Thanks so much for making me seem a total cock though guys.. Nice. I mis-typed that's all.

I may seem to have paid too much, but I was willing to cough up so that I knew that the home was tested and safe that's all.

But it was OK before! There will be a faulty appliance somewhere.

 

[Matt Smith]

Thank you... going to have to try find out what is causing the leakage now, sorry for wasting your time guys.

 

[plugsandsparks]

Disconnect all appliances in kitchen, reset RCD, bring in one appliance at a time, slowly, if you have a clamp meter us it to detect differences in L and N.
cheers

 

[Engineer54]

I'm not understanding this at all!!!! How can any electrician work without any test equipment to his name?? Is the OP self employed or is he engaged in employed electrical work and only does a bit of domestic work on the side?? Probably the latter!!

He obviously isn't registered with a scheme provider, if he doesn't have the required test equipment, so i don't know what's going on, that's the only reason i can think of, to pay someone else to test for you!! lol!! Now if this CU cost £300 to test, how much did the whole CU change cost this customer???? The mind boggles!!...lol!!

 

[electric will]

Ok so no testing done before cu change? I fell foul of that once, and only once!!!
What's the insulation resistance test results now, i mean after the boards been changed? Not all but just the ones from the side that the rcd is tripping will do.

my money's on the water heater, what about everyone else?

 

[Midwest]

I'm putting on my tin hat here........I do grow weary of people, albeit perhaps not ‘Competent’, posting on this forum and being ridiculed for their lack of knowledge, skill or expertise. I think Matt realises he needs to carry out tests to establish the root of the problem. I sense from his tone though, he wished hadn’t posted in the first place. I suspect he thought he could use this forum to broaden his knowledge by getting advice from experts & experienced electricians. Perhaps this stance will encourage the budding spark to go away and get properly trained.
To think that is the case is pure utopia, and I fear some might not dare post & just go and‘takeaway the rcd and put in a main switch’?