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Thank you gents.

Does anyone know the BS number for a time delayed 100mA RCD?

An upstairs spur double socket from a downstairs ring.

Says he went to Australia. You know it sounds more suspicious the more I think about it. I may walk from this one.

BCO was not involved in the rewire element of the refurb as I believe he thought it was part of the electricians remit.

RF that is a good idea, I will suggest that to him.

So he has nowhere to go. In theory he will not be able to get the house signed off and therefore will never be able to sell.

I did suggest that to him but it would not solve his problem of getting it signed off.

I was asked to do an estimate for some broken luminares. When I turned up I found a newly refurbished large house with full rewire and all new downlights (many) etc. The client then told me the full story. The lighting circuit MCB keeps tripping, half the many downlighters have blown and much...

Thanks chaps.

So using the 3 terminal lead

Won't the 30mA RCD go first

It is a TT supplyand a split CU and therefore the main MCB is a 100mA time delay RCD. No problem with testing the 30mA RCD. How does one test the main RCD.

Can anyone tell me the best route to follow for an 18 year old wanting to become an electrician.

Is this under fault conditions.

I don't follow

So you have lost neutral and therefore also earth and all there is indoors is a potential of 230V and no path to earth. How does connecting the incoming gas and water to the MET make things safer. (Bare with me, penny has not dropped on this one yet)

Can you give me an example of that?

Can anyone explain to me why is main equipotential bonding more important for a PME instalation.

Thanks Rich. So basically a messy affair.