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Classic neutral to earth fault. It won’t go into fault when there’s no load connected. But any load on the circuit will put current down the neutral and onto the earth at the location of the damage/moisture and trip the RCD.Doesn’t sound like a faulty breaker to me at all.To be clear, you’re saying the RCD and breaker tripped , but the MCB (mini circuit breaker) won’t stay up now (but the RCD can be reset)? One thing that is often missed, is that you need to flip the switch all the way down before it will switch on again (it trips to the halfway position, so needs to go all the way down to reset).
You’d need to have a fault to earth to trip the RCD (current going from from live or neutral to earth). And you’d need to have a fault from live to earth, or live to neutral to trip the MCB, or just have too much shit plugged in (but this doesn’t sound likely in this instance).
Nef-
Neutral is Earth (in the UK at least)
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I'm away until Weds so will test the pushing all the way down theory then.
It managed to stay up when every plug was out / switch was off but as soon as any of them were switched on it tripped again. (Any of them even devices I tried on other circuits and which didn't trip)
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Just had an electrician over - there were three loose wires in the fuse box left by the guy who installed it last year and did a runner when I asked for a certificate. One was melting, the other two had a bit of damage but nothing substantial. All sorted and circuit back on.
eskay
CYOA
RCD has tripped for a circuit in the back of the house.
Fuse won't stay up. When I switched everything off / pulled plugs etc it remained up. As soon as I switched any of them on, it went straight back down (so it doesn't appear to be a specific switch/appliance).
New fuse for the consumer unit?
There's nothing in there we need (washing machine but can wait as am assuming it shouldn't run on a 10amp extension) but wondering if there is a checklist before calling electrician?