its my bread and butter love fault finding had 3 last week/ beats doing hard graftSneaky buggers these earth faults!
its not a dead short to earth and only trips when something else in circuit is usedAlso, what is puzzling me most is why it takes so long to trip? Whats that about?
I have and was!! :-)Good idea, be careful in that trunking as it's often a good hiding place for bodgery. Maybe shut it of first as it's 3 phase.
Check nothing is trapped under the trunking lid or caught by the fixing screws.
Look out for mice...