"John Rumm" wrote in message
...
wrote:
What length is the cable run?
up to 15 metres (10mm cable)
OK, we probably have enough info to try a design exercise...
Alternatively the circuit length is short enough to select a conventional
circuit from the OSG and comply with the installation method and overcurrent
device selection. I agree that 10.8kW is very close to the 45A MCB rating
but that's not by accident. The bit of cabling under the insulation was
always the installation method risk. Personally I'd suggest a 9kW 40A route
and not worry about the cable run. If you accept electric showers it will
still be adequate, just less adequate.
Jim A