Maximum demand calcs

[APE37]

Hi guys. Just looking at how people work out their max demand for supplies to consumer units. Looking at a board change with 7 circuits and going by osg working out to be over 80a I have heard of the 40% rule of total load but was wondering if any others have a different method. I cant see an average house pulling more than 55a really but just looking at others views.
Cheers

 

[Strima]

Have a look at the homeowners and their lifestyle, a little old lady will use nowhere near as much as a family of six with all the gadgets you can think of.

Try not to think about the max demand over a period of a day but around one hour when people have finished work and arrive home. So cooker on cycling through heating stages, possibly a shower running, kettle on etc. Kids turning on TV's etc.

 

[buzzlightyear]

average 60 kva

 

[telectrix]

Try not to think about the max demand over a period of a day but around one hour when people have finished work and arrive home. beer pump is hand pull, microwave is only 1kW, nowt on tv except unwatchable soaps, what's the problem?

corrected that for you.