OP
nickblake
am i being an idiot?
no you not mate , i had one the same last week , did a PIR all open but looked like a ring , the way i found it was to remove the tails from the board (of that circuit that is not the main tails lol)Do an R1+R2 test join the L an cpc together of one leg then test at every socket you should get a reading go till you dont get a reading then do the same with the other leg till you get no reading and then investigate that area , i found the one i had it was a cable cut in half half way up a wall , i was lucky it was a bungalow and i had access to the loft and cables , good luck on finding it let us know how you get on
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