On 30/07/2014 09:52, The Other Mike wrote:
On Mon, 28 Jul 2014 22:25:43 +0100, Andy Wade
wrote:

On 28/07/2014 10:09, Tim Watts wrote:

I would say we might as well have 400V as 230V and more or less halve
the conductor sizes. Much more than that is getting silly though.

I'd vote for the standard domestic supply being 3x32 A (3-ph) instead of
1x100 A. Then we'd have the advantages of 3-phase for motors and
rectification, and could have 400 V appliances like cookers and showers
hooked-up with 2.5 or 4 mm^2 cables. Proposals now required for a
compact 5-pin 16 A plug & socket...

Just design a slightly enlarged version of one of these
http://en.wikipedia.org/wiki/DIN_connector


They have:

http://www.mennekes.co.uk/uploads/me...nd_sockets.pdf

--
Colin Bignell