In an earlier contribution to this discussion,
Unclebill wrote:

Dave Plowman (News);1815186 Wrote:
In article ,
Unclebill wrote:-
I bought a multimeter, checked that the conduit really is a good
earth
and found out which cable was which.-

How did you do this with a multi-meter?


I followed the advice received from another well known forum :-


That says it all!
--
Cheers,
Roger
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