On Tue, 25 Apr 2006 04:52:54 GMT, m II wrote:




The cycles of each phase are out by that many electrical degrees in
relation to each other. I've never seen 120V three wire 3 phase. The
lowest voltage 3 phase 3 wire I've experienced is 208 volts.

If there is a 'wye' connection with a central white leg, (3 phase 4
wire) then you will see 120 volts from a hot leg to this white (neutral)
and 208 volts between any two hots.


The numerical stuff is covered he

http://encyclopedia.laborlawtalk.com/Three_phase

The really scary math happens with major short circuits on a leg causing
asymmetric fault currents.

Uneven power factor loads in the phases can make some interesting vector
diagrams..

it's been a while since school...sigh...

mike
Don't tell me, tell them.