not a shelf life as such, but once installed they get dust in them, mechanisn sticks if not tested regularly, and if they keep tripping due to a fault, sometimes they get wore out. a bit like me.
O
Octopus
OP ............. you stated you had a spark coming on Thursday, which I presume was today - what did they find?
Is that really a thing? Rcds can only trip umpteen times before they get worn out?
I'd have thought they'd be designed to break their rated load 1000+ times before suffering any failure due to wear.
However I'll agree with the overall point that the op is not going to solve it quickly through trial and error!
I'd have thought they'd be designed to break their rated load 1000+ times before suffering any failure due to wear.
However I'll agree with the overall point that the op is not going to solve it quickly through trial and error!
Eh????
What a waste of money. It was obvious from the start it wouldn’t be a faulty RCD. You are not going to save money by doing random changes of equipment. Also it’s dangerous as you clearly are not competent to do so.....
He also doesn't know whether this second-hand RCCB purchased from eBay even works correctly...
O
Octopus
Disagree about the faulty RCD .... that does happen, rarely , but ...
If called to an RCD tripping your first port of call is never to change the RCD, or randomly change any parts for that matter.
Consumer unit is a bit of a botch and a mess...but I don't see these as plain as day?? The fault would be far from intermittent and easy enough to find if it was shared neutrals.
Look at the busbar in the original picture, the 2 MCB's to the left are also protected by the RCD in a somewhat "bespoke" arrangement.
Not as rare as you might think I don't change that many consumer units but I have had two that had faulty RCD's brand new out the box and another that I found while doing some other work for a customer that wouldn't trip within the rated time and current about 6 months after installation
Normally it is the shared live not the neutral that is the problem but I doubt it in this installation
So you are saying it would be more likely a faulty RCD rather than a Circuit fault? Disagree
O
Octopus
I was disagreeing with the post that ruled out a faulty RCD ....
Tripping RCD's can be caused by:
1. Issue with the incoming supply
2. Faulty RCD's
3. Earth leakage from appliances
4. N-E faults on RCD circuits
5. N-E faults on non RCD and RCD circuits
6. Faulty appliances
etc etc
Chivers
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The shower is still working but doesn't get used? The Neutral and earth are still connected even if the MCB is switched off (others have mentioned this). When RCDs trip I always think water or poor insulation resistance. I'd be tempted to remove the shower neutral & earth (and tape up) in the first instance unless it can be totally isolated? This will eliminate that circuit without an unnecessary disruption to circuits that are being used.
It does seem odd to wire the RCD in with circuits either side rather than just to the right with one length of bus bar - looks like it's been an afterthought.
It does seem odd to wire the RCD in with circuits either side rather than just to the right with one length of bus bar - looks like it's been an afterthought.
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