On Wed, 24 Mar 2004 20:03:28 -0800, "Robert Swinney" wrote:
gradstdnt sez:

". . .currents for each leg are not as nicely
balanced. . . . "

You should not be measuring current in the 3 legs when attempting voltage
balance. It will totally confuse you! The current flowing in a 'rotary
phase converter / parallel load' is very complex. Some of the current looks
like it should be flowing in 2 directions, against itself. Of course, this
doesn't actually happen, but the reactive currents combine, add, and
subtract in the 3 legs in ways that make them an extremely unreliable
indicator of balance. Stick with voltage balancing techniques and leave the
clamp-on ammeter for the final power factor adjustments.

Bob's right. Balance the phase voltages, not the currents. The only time
you want to measure currents is when tuning out power factor on the
primary.

Gary