My house has solid walls with plaster,
I was going to groove the plaster and bury cable in it
Do I need plastic conduit?
I've got the yellow on site guide,
trying to work out what size cable to buy,
re page 69 'installation reference methods'
Is that installation method A on page 69
'Enclosed in conduit in an insulated wall'
does that mean heat insulated or electrically insulated?
No, you can bury a cable directly in plaster if you want.
Can't say without knowing what the circuit is going to be used for...
A normal 32A protected ring or 20A protected radial would typically use
If you bury the cable direct, then its method C, if install it in
conduit and bury that, then its B.
Heat - since its the cable maximum temperature that dictates its maximum
operating current. Hence the more thermal insulation the less current
required to reach the maximum conductor temperature (typically 70 deg C
for PVC insulated cables)
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