On Jun 14, 6:50*am, GC wrote:
Sorry.....Also has a 3 KW heater..

Are you on 230V there?

Your total load is 8.45kW which is 36.74 amps. You would need 6mm
cable to meet the minimum voltage drop requirement here in the UK.

But - having said all that, I don't think you have listed the specs
correctly. Are you sure it really has two pumps rated at 2.25kW each?
That seems excessive to say the least - are you sure it doesn't have
two *heaters* rated at 2.25kW each? That seems more likely...

Assuming the extra 3kW you added on there at the end is a mistake,
your total load would be 5.45kW which is 23.7A which would be fine
with 4mm cable over 27M

Steve

Steve