Can a standard 220v motor that is run on a common 110/220v supply be run using two legs of a three phase system? I have seen it done and the motor runs but eventually fails. Is the failure caused by the phase difference ie: 120 deg vs. 180 deg voltages or different voltages in the three phase systems.
Thanks for your reply.

https://www.quora.com/What-key-differences-exist-between-two-and-three-phase-electric-power

What is the difference between single-phase and 3-phase power? | Tripp Lite (http://www.tripplite.com/products/single-vs3-phase)

What is the voltage of the 3-phase? The voltage across any two legs would be \small \sqrt 3 greater than the voltage of each leg (though still a 60 Hz sine wave).