On Mon, 9 Aug 2004 23:14:31 +0100, "G&M"
wrote:


"Rick Hughes" wrote in message
...
Q was - To RCD protect a cooker and immersion or not .... the regs do
not
require it, but that may not be best practise.

I can see no reason not to RCD protect these. Even if there was a nuisance
trip, the worse that can happen is a cold supper or bath.




There are a few exceptions though.

It's a good idea to have at least some lighting on unprotected
circuits. Then if the RCD trips, you are not also plunged into
darkness.

For my workshop, I have a separate supply and CUs and have a 30A
circuit for a woodworking machine. This has an electronic 3phase
convertor inside and the manufacturer of this specifies a 100mA RCD,
AIUI because of the filter arrangement. It also requires a type C
MCB, as does the dust extractor because of high initial load currents.





..andy

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