I built my self starting rotary converter with a $10 surplus 5hp motor and a
bunch of salvaged run caps, it works good for my sand mullor which starts
under load. Further more it becomes more ballanced as I add more load.

"Fitch R. Williams" wrote in message
...
"Steve Koschamnn" wrote:

I took apart a 7.5hp commercial phase converter - I forget the brand
but it was not a Phase-a-matic. It was the Hanrahan self starting
circuit with a bucket of caps inside a box mounted on the side of a
Chinese imported 3ph motor. I connected it up for my neighbor in his
shop. Seems to work just fine, but it is sure noisy.

Second question... can I parallel a standard 2HP 3 phase motor with this
1
HP unit and try to get a 3 HP converter going?

Yes. Start the 1hp unit first since it already has a start cap, then
turn on the second idler.

Should I balance the phases
of the 1 HP unit and or the combined 1 and 2 HP (=3 HP) units?

If you will be running the 1hp unit by itself sometimes, balance it by
itself. Balance the 2hp unit with its own capacitors while both
motors running if you are going to use it that way.

Fitch