.. They're orthogonal to each other, so going around the diamond
clockwise, each adjacent set of wires has a voltage magnitude between them
which
is sqrt(2)/2 the pair voltage across each phase pair (polarities at any
given snapshot
instant swap as you move from quadrant to quadrant, of course).



Ah! That explains the 90 degrees, 90X4=360, but if that is the case why
wouldn't be 4 phase?


Well, hopefully he didn't fry himself.

Literally or figuratively....


Alan