In article ,
Guy King wrote:
Shouldn't matter if the lighting circuit is earthed which of course I'm
assuming.

But a faulty earth (which happen fairly often, I suspect) would leave
you very vulnerable.

As it would on anything not normally RCD fed. Like cookers. Washing
machines. Etc. However, if the rail is in a certain part of the bathroom
it would need supplementary bonding anyway.

--
*It's this dirty because I washed it with your wife's knickers*

Dave Plowman London SW
To e-mail, change noise into sound.