In article ,
Arny Krueger wrote:
230v AC rating is 24 amps. However, this doesn't mean the
cable will melt at 25 amps. It's simply a guide that
mains voltage drop will be acceptable at that current
over the lengths likely in a domestic environment.

I'm under the impression that heating inside conduits with
multiple conductors and long-term degradation of insulation
is considered when rating electrical wiring.

Yes - that 24 amps is for 'normal' installation. If the cables are bunched
or insulated heat wise in other ways you'd have to de-rate them.

But in the UK it's not usual to use conduit for house wiring. TW&E - twin
and earth in an outer PVC casing - is the standard.

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Dave Plowman London SW
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