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Pandora
 
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Default Upgrade to a three phase domestic supply?


BigWallop wrote in message
...
snip

A simple test to carry out, is to wonder around the house and total up the
load of all the electrical equipment you have plugged in to the mains
supply. i.e. heating, lighting, cooking, laundry, food storage etc. etc.
and see how much power it would use if it was all running at the same

time,
even all the little clock radios and things, and I think you'll be amazed

at
how little it really does draw compared to the supply's capability.

snip


It's Sunday evening. Mum's doing the washing/drying/ironing, Dad's cooking
lunch and four teenage children are showering/doing homework/watching TV.
(Putting aside the debate about stereotypical representations) I think that
this family could draw the following loads simultaneously:

12.5A (Washing machine)
14.5A (Tumble dryer)
6A (Iron)
1.5A (Fridge)
3A (Freezer)
12A (Dishwasher)
10A (Cooker (electric))
6A (Microwave oven)
8A (Electric kettle)
2A (Hi-Fi Stereo, surround sound system.)
2A (2 x Computer)
1A (2 x 17" monitor)
6A (Hair dryer)
0.5A (TV)
1A (Computer)
0.5A (17" monitor)
2A (Shower pump)
2A (Extractor fan)
12.5A (Immersion or water heater)
3.5A (Central heating pump)
3A (Fan Heater 1/3hp)
10A (Lighting)
5A (Sundry electrical loads)

That's a total 124.5 amps. OK, we can argue that their approach to energy
efficiency could be improved. In terms of rating a supply, however, a single
phase 100A supply seems inadequate.

How do my load estimations look?