GL, there was a good discussion about phase convertors awhile back.Do a web search of phase convertors, lots of info.A 25 HP 3 phase motor running at 230 volts draws 68 amps. 3 phase delivers 1.73 times the power at the same amperage as a single phase, so get out the calculator. figure 300 amps like Ken for the momentary current inrush to start the motor, that motor will blow the utility companies line fuse in a NY minute.In fact, starting a 10 hp single phase industrial 230 volt motor(50 amps running current) is a problem in a residential area.Industrial electrial motors draw almost twice the current of the typical compressor motors found on residential /commercial equipment.