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I have had to fault find on a very old, big house (with a bad damp problem) as the MCB feeding the kitchen sockets is tripping. There is no RCD.
It is a ring circuit. The IR results L-E are 0.003MΩ. L-N IR results indicated something left plugged in (really sorry but I can't find the note I made of the results!) I kept finding more sockets hidden away in cupboards and switches hidden above cupboards that were part of the ring and each time thought that has got to be the final load disconnected on the circuit, but the IR results still indicated a load.
I have traced the poor IR results for L-E and the tripping has stopped but I would have liked to have got a >1MΩ reading for L-N.
I suppose my question is, are there specific(ish) IR results for things left plugged in compared to a fault so that you could identify which it is?
It is a ring circuit. The IR results L-E are 0.003MΩ. L-N IR results indicated something left plugged in (really sorry but I can't find the note I made of the results!) I kept finding more sockets hidden away in cupboards and switches hidden above cupboards that were part of the ring and each time thought that has got to be the final load disconnected on the circuit, but the IR results still indicated a load.
I have traced the poor IR results for L-E and the tripping has stopped but I would have liked to have got a >1MΩ reading for L-N.
I suppose my question is, are there specific(ish) IR results for things left plugged in compared to a fault so that you could identify which it is?