Total max power required in KVA (after diversity) for 2 bed 2 storey flat?!

most service head fuses that EDF fit are now 100amp - that's 23KVA. 60 amp fuse (should be enough) would be 13.8 KVA. 80 amp fuse would be 18.4 KVA The first answer above has been calaculated using the nominal voltage as 250v. That is wrong - the nominal voltage is 230v

18 kva is roughly 72A. Normal supply to a house is 80A. But you'll never use that all at once in a standard domestic dwelling. You could go lower it all depends on how much there gonna quote and for what size cable they are going to put in

Hi, The average kva for a 2 bed house / flat is about 8kva. A 3 bedroom on average is 10. They are however asking for the maximum. Considering that you have gas central heating and a electric shower I would be inclined to say the maximum would be about 15 kva. If you applied diversity ( after all what are the chances that you have all the lights on, cooker,hob, tvs ect while you are in shower ! ) the maximum might come down to 13 kva. Still probably on the heavy side but better to play safe. Hope that helps. Nigel NJM Electrical

This depends on what is being used in the flat. Need to take all appliances into account then apply diversity as per reg.