N
nicebutdim
Personally I think the diversity and max demand are crude to the point of absurdity much of the time. I've got big houses with 30+ circuits, 8 or more ring circuits that are "non compliant" according to any max demand calc method - what's the solution - join all the rings into 2 big ones? One house has 4 kitchens! Yet 2 people living in it! And power consumption that gently ticks along...
I put this to the inspecter when he questioned why I hadn't filled out the max demand box, that in a large 4 storey house 5+ rings circuits is a better job than 2 and won't use any more power regardless of what max demand says and he squirmed and shuffled and mumbled a bit with nothing meaningful to offer...
This is a point I've made previously. The IET need to catch up on their max demand calculation as it's meaningless when regulations pertaining to division of circuits and minimising nuisance tripping are taken into account.