380Y220 is a classic Japanese set up, so you may be building for an Hitachi system.
The OP said this was a 416Y/240 system.
Texas Ranger is correct. Japan's voltage is 200/100 1Ø, and 200V 3Ø.
http://www.inverter-china.com/blog/...e-phase-voltage-frequency-and-wires.html.
