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Harry Bloomfield[_3_]

wrote :
Hi gang,

AIUI, out in the road there are three live wires and one neutral. The phases
of the lives are 120 degrees out of phase with one another. The potential
difference between any two live wires is 440V. The potential difference
between any live and neutral is 230V. Domestic supplies only tap one live and
the neutral to give you a single phase supply, so if you want a 3 phase
supply for a workshop or whatever, you have to get the leccy blokes in to dig
up the road and tap you into one of the other live wires. Do I have that
right?

cheers.

The basic numbers in the UK are 415v 3Ph. 240v single phase = 240v from
any of the three phases, to neutral. 415v as measured from any phase
aay of the other two.

If you have 1ph + N, you are lacking two more phases to make a 3ph
supply.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk