Did the tenant leave under good terms and was he an electrician?
Can you think of any approaches other than "try everything", given where we've got to?I presume you are just 'trying everything'.It's very much a long-shot, but the one other thing you could try would be (with all MCBs off) to switch off the other RCD, and see if you could then reset the tripped one.
Well, we're scraping barrels! I suppose it's possible that a small N-E leak on one side might not be enough to trip one RCD, but may be the 'last straw' for the other one if there was also an N-E leak on its side, and particularly if the trip thresholds of the two were a little different. However, TBH, I was really just thinking the same as you (Main Switch) and getting everything (double-pole) switched-off - since if the RCD would then still not reset, and the OP has effectively ruled out a faulty RCD (by swapping), we would have an 'almost impossible' mystery on our hands (unless there is something very odd/wrong about the wiring of the CU!).There's no way that current on the 'other side' could cause the tripping without also tripping that RCD, is there?
I meant to ask at least the first part of that ... but if the answers are No/Yes respectively, I guess that almost anything is possible (and I'd start by having a careful look inside the CU!)Did the tenant leave under good terms and was he an electrician?
I have seen a split load board that had a number of small faults on the LHS rcd, none on the RHS, yet turning on a specific light switch fed from the RHS caused the LHS RCD to trip.There's no way that current on the 'other side' could cause the tripping without also tripping that RCD, is there?
I was thinking cleaning. I have had to do some major cleaning when moving out of flats , not because I'm particularly unclean, but landlords eh?Strange timing though, a day where lots of things got unplugged, cleaned etc...
... unless the OP confirms (which he already thinks is the case) that he can't reset the RCD with the Main switch off ... in which case it becomes a major mystery.I was thinking cleaning. I have had to do some major cleaning when moving out of flats , not because I'm particularly unclean, but landlords eh? I guess it could be lots of things, water has got into a junction box under the floor, water in a socket.
The OP has apparently done both (and quite a lot more). As you say, the next thing to do is to start disconnecting neutrals, but that's probably best left until his electrician attends on Wednesday!Rather than swap rcds, what you usually do is switch off the mcbs on the trouble some side.
Would you care to proofread that?You neither disconnect the neutrals one at a time or all or suspect circuits or circuits you don't require. Etc.
That's a bit rotten for a Friday evening - it only needs to have one "n" removed to make it at least understandableWould you care to proofread that?You neither disconnect the neutrals one at a time or all or suspect circuits or circuits you don't require. Etc.
Hi,
I have a 3 bed Terrace property that has been rented and on the day the tenant moved out half of the electrics failed.
Modern fuse box, 2x RCD's each with 6 MCB's
One RCD wont reset & the RCD's have been swapped and the problem isnt with the RCD.
This RCD has;
MCB's for Oven, Hob
Socket circuit (all) that has extractor and boiler hard wired (No "plugged" appliances connected)
Downstairs lighting circuit
Richard
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