In article ,
Grunff wrote:
Can I ask why? This may be being naive, but if all your light fittings +
switches are double insulated, then is there anything inherently wrong
with a non-earthed lighting circuit?

The snag with this is exactly what's happened. You at a later stage decide
to change a fitting for one that needs an earth - or possibly more likely,
change the switches to metal ones.

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*If you can read this, thank a teecher

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