Bit confused why there is such a flap over 8kw and 8.5kw Both are too big for a 32 amp MCB and unless we are working with an MCB with the ranges 34-37 amps most likely the size will be 40amp
So have you a 32 amp MCB and if so you can only go with a 7.5kw.
yea I'm going to be going for a 7.5kW mate.