Its a tricky one! Electrical Advice

Its a tricky one! Discussion ThreadIts a tricky one! Electrical Advice

Hi all,

hope you are well, DIY'er after some thoughts if possible. After a period of very heavy and prolonged rain my electricity trips, when I turn off the switch for the power to the shed (pic attached) I can put the electricity back on.

Sometimes I can then immediately put the shed switch back on and all is well, sometimes I need to leave it a few hours before it will go back on without tripping. When it is at a stage where it won't switch on without tripping I've turned off sockets, lights etc in shed and it still trips when shed power is switched on.

That would make me think the the issue is with the armored cable that's mainly buried under soil, however what I don't understand is that if water is getting into the cable and causing a trip why would it all be OK again, sometimes immediately, sometimes after a few hours as the ground, let alone the cable, won't dry out in that time?

Any thoughts as to what could be causing it or any further steps to diagnose?

Thanks all, any input hugely appreciated.

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