Once had a car park lighting duct with rope in but blocked, local labourer fetched his ferret in with a ferret finder and found where duct was blocked in about 10 min.(crushed by rocks compacted by JCB )
(has been wired in 3-core & earth but, obviously, only the Line, Neutral & Earth are currently being used (so a spare core). )
where does the spare core go ?
That L-N reading might not be the lamps ,remove fuses from cut-outs switch on if it does,nt trip mcb refit fuse one at a time till it trips . Is 50 megs on an old micc a bad reading?
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