...the only things 3 Phase are the Spindle motor and coolant pump most likely. ....you can use 220v single phase and start the machine up....figure out which two of the three Power Inputs to hookup to.....trace the two wires on Trans #2 (GE) back to Main fuse Inputs will tell ya. As far hooking up your VFD maybe a little involved if, you want to control it from the CNC Control. M3 M5 and S codes. Not easy but, can be done (I thnk) in the Dynapath 20 PLC. other Zoners maybe able to help you with more information soon.