Three-wire, 120 volt single phase, or split phase are sometimes incorrectly called "two-phase". So let’s assume we’re starting with 120VAC single phase.
We need to know the operating voltage of the motor. A 5 HP (~3.7KW) 3-phase motor is fairly large, so this implies an operating voltage of 208-240/460VAC.
This will take two steps:
First, use a transformer to step up the line voltage. For example, Acme Electric T279744S will accept an input voltage of 120VAC. and output 240VAC up to 5kVA.
Then use a phase converter to convert from single phase to 3-phase. For example, PHASE-A-MATIC PAM-900HD will convert 240VAC single phase to 240VAC 3-phase up to 8 HP (6 KW).
"StrykerTECH":http://www.stryker-tech.com/ Engineering Staff
