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Discuss explain this..... in the UK Electrical Forum area at ElectriciansForums.net
it clearly looks to have been TT at the time of test, given the electrode resistance results.
Update.... Got called out to same job as outside lights where causing the rcd, that covers the majority of the premises, to trip. Found lose neutrals in the lighting circuit which seems to be the cause as they have been fine for 2 days now. Anyway while I was there I carried out a Ze and got a result of 0.13ohms. I would therefore say that it is tncs system.
Now that that's been determined what would your thoughts be on doing away with the rcd covering the whole board and use individual rcds? So as when a fault develops the whole board won't trip off.
Sorry Simon have to ask....Zpn?
Were the readings the same with Ze & Zpn?
Reply to explain this..... in the UK Electrical Forum area at ElectriciansForums.net
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