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That's correct so long as each circuit is protected by an rcd then so supplementary bonding is required.

Don't think he's put any shelves up but he has had a builder in insulating the walls and so they might have caught it then, i hope its not as it'll mean re-wiring the circuit. What is the mlikely hood of it being a faulty lamp or lamp holder?

So when i go back to the fault tomorrow then this should be what i check next?

Sorry about not being clear enough, yeah thats what i mean but i also seem to get perfect readings from the first light around the rest of the circuit then as well.

Can you tell me why you've wrote this and then when i've asked for a bit more advice as to how this would have changed things you then don't reply at all.

Sorry i forgot why does this now change things?

One other thing which i've forgotten to mention is when i did the insulation resistance test at the fuseboard and got a dead short i then went to the first light split up the cables and tested everyone of them and all the readings came out fine.

If you mean another cable (i.e neutral or live) then surely that would show up when i do the insulation resistance test?

Right ok perhaps i should've explained a bit better all the lamps will stay on for a certain amount of time and will then go off so seeing if one lamp works in one light will do me no good as i they are all working for a short time anyway. But thanks anyway.

When you say take one bulb and check each fitting seperatly, how do you mean?

Ok so what your saying is i should try and change the lampfittings? These lampfittings have no earth terminal at the moment but that shouldn't make a difference should it?

Sorry i've tried doing all the quotes thing but its not workin In answer to your first question: But there is no fault on the circuit when it is disconnected from the fuseboard. Second Question: A dead short Third question: Insulation resistance Third question Would it do this...

I've recently been called to a fault on a lighting circuit in a property, when asked if the occupier had done anything differently he told me that all he had done was change the lamps to the eco friendly ones. I then disconnected all the lamps and when i then tested the circuit the only time...

Are they those push in connectors you sometimes find in lights? If so even if they did comply then i wouldn't put them in as i wouldn't feel safe. But thanks anyway.

I'm at a job where i've been asked to extend same cables, now unfortunatly this must be done under the floor. I know that Junction boxes are now not allowed, and i would use crimps in a choc box, but recently i found out that apprently crimps aren't very good on solid cables and only work well...

Yeah alright lads, i'm still quite young and that had been the biggest mistake i've made no need to rub it in, i now know that you must test everything before changing a CU i was just never tought to do it like this by my ex boss. You both must've made mistakes in your careers? Its reasons...

Like? Look i haven't come on here for a fight and i do sincerly apologise about what i said previuosly, i actually find this forum very helpful, i'm just not a very confident person and so like to get assurance of other people. Don't really no what bongos problem is, as the first of those...

I apologise if i've cause offence but ive come on here asking for advice to install a sub main and all you've done is tell me to get a competent electrician and then in your next post imply that there is other stuff i need to know.