"tony sayer" wrote in message
...
In article , Adrian Simpson
writes
I'm having a bit of "fun" with my electrical system at home, and would
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The RCD has nothing to do with the earth as such. All it does is look at
the current into the protected circuits, on the live and checks that the
same comes back out on the neutral. Any imbalance i.e. leakage to earth
then it will trip the level needs to be about 15 ma or so..

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Tony Sayer


http://www.westernautomation.com/pages/demystify.htm