I was trying to out comment him with 240 5-wire two phase comments
But Dang he won, It must have worked, because now all I here about is huge 416/240 systems going in.
@Besoeker3 I'll bet you a milkshake that if you measure the voltage in your house right now its closer to 240 than 230, the UK (as I recall your in Scotland) only adopted 400/230 on paper they did not run out and change anything, distribution transformers are still the same 415/240.
And in rural areas you can even find 240/480 split phase but they don't use the 480.