Lighting tripping rcd

[eco-tech]

hhhhhhhhhhhhheeeeeeeeeeellllllllllllllllllllp

 

[kung]

is it a low energy bulb ? ive had one go and trips the rcd but didnt let you reset it with bulb still in ! for the sake of 5 mins its worth testing all low energy bulbs in a table lamp.

 

[eco-tech]

yes its low energy
Hmmmmmmmmm

But what will cause this ?

 

[eco-tech]

Its a radial circuit.

 

[eco-tech]

Ok

Looked at the job today

What i have is a pendant that trips the rcd.
After looking into this i found a N that leads to nothing.
Looks like this N should be connected to a pendant after belling out etc.
My thoughts are this N is not connected to this pendant i found and the pendant then leads to a terminal j/box will this cause the other pendant to trip out.

I think the N must lead to a j/b from the light fitting and the loose N leads to d/board.

So my plan is to link this N to the pendant and things should work !

Any ideas chaps ?

 

[SirKit Breaker]

A long shot but have you tested the RCD?

 

[eco-tech]

yes rcd working fine.

Cant think of anything else.

I belled out the wire between the fitting and N and all was ok.
this light also dos not work ,so makes me think if i link this N up to this fitting it will give me te radial ?

what ya think ?

 

[eco-tech]

Hmmm

If this N is not connected at all TO THIS 2ND FITTING would it still work

call me daft but my heads is busted lol

 

[nickblake]

Check the connections at the fitting

 

[eco-tech]

Hmmmmm me thinks this could be it then hmmmmmmmmmmm whats the best way to sort it then ?

 

[nickblake]

swap the fitting with the one that works and see if the RCD trips then if so take out the suspect fitting leaving the one that works in and terminal block where the suspect fitting was so the circuits complete less the fitting

 

[eco-tech]

yup done that it still trips the rcd with a new fitting

Just can't understand this at all

aNY MORE IDEAS LOL

 

[robsparky1975]

Think methodically,the more you stress out about it,the less likely you are to find the fault and repair,so deep breath,and start by halving the circuit,disconnect all conductors to furthest point say,leave in place from ccu to that point,still trip?no,then that half is ok,then move further down circuit,i dont know how much experience of fault finding you have,but once you have found and fixed it,you will say to yourself that was easy,are these all existing fittings and wiring or has it been altered and now does not work?

 

[Had8Lives]

Has the light got two way switching? Could be a borrowed neutral.

 

[eco-tech]

Sorted,

Found that the ring main had a N leading to the light grrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr

Thanks chaps