Hi there.
I am wanting to replace an existing Gainsborough 8500 electric shower unit which I am presuming is 8.5kW. The supply to this unit is 10mm cable, surface mounted, approximately 11 metres from the consumer unit protected by a 40Amp MCB with double pole isolating switch in the bathroom.
I have read the postings on cable sizing etc and still find myself confused.
Am I correct in assuming that I can fit a 9.5kW shower on this circuit as it stands or if I change the MCB to 45A I could even have a 10.5kW unit instead?
The current consumer unit is a standard 100A unit. How do I determine how much power is being supplied to the house so I know there will be enough when demand dictates?
I want to avoid having to replace the cable if possible for the obvious reasons and get the best shower unit possible with minimum change.
Thanks for any advice in advance...
I am wanting to replace an existing Gainsborough 8500 electric shower unit which I am presuming is 8.5kW. The supply to this unit is 10mm cable, surface mounted, approximately 11 metres from the consumer unit protected by a 40Amp MCB with double pole isolating switch in the bathroom.
I have read the postings on cable sizing etc and still find myself confused.
Am I correct in assuming that I can fit a 9.5kW shower on this circuit as it stands or if I change the MCB to 45A I could even have a 10.5kW unit instead?
The current consumer unit is a standard 100A unit. How do I determine how much power is being supplied to the house so I know there will be enough when demand dictates?
I want to avoid having to replace the cable if possible for the obvious reasons and get the best shower unit possible with minimum change.
Thanks for any advice in advance...