On Thu, 26 Aug 2010 12:11:26 -0700 (PDT), harry wrote:

On Aug 26, 6:55*pm, wrote:
On Thu, 26 Aug 2010 06:41:21 -0700 (PDT), harry
wrote:

There's nothing bigger for domestic use. *You can go as big as you
like for industrial sockests and three phase as well. *You don't
normally see three phase domestically, You can get enough from a
100Amp /240volt supply. Especially now with soft start motors.
There's been recent big advances on appliance efficiency so that much
less power is needed. *By law now they all have a rating displayed.
No-one buys anything now that doesn't have the highest rating.
There's a rating war on in fact.
The pins on recent 13a plugs here are insulated so that if part-
inserted nothing live is exposed. *Also the holes in the sockets are
shuttered, you need to insert the three pins to be able to get the
plug in at all.

The US considers 240 volt 100a service the bare minimum and 400a is
not uncommon. Most houses are 200a. My spa pulls 70 by itself.
11kw heat, 2.5 hp jet pump and 3/4 hp circulation pump.

Most houses have a gas supply too. That would generate another 50 or
60 Kw of heating. We don't have exteme weather conditions either.

200A service with gas heat isn't at all uncommon here.