I have 2006 CNC 3 axis Bridgeport/Harndinge EZ Vision Mill
My machine is wired for 3 phase 460 volts
3.3 amps and 1.1 Spindle amps
I only have single phase 240 coming in the shop.
I also have a used Hitachi VFD. http://www.clrwtr.com/PDF/Hitachi/Hitachi-NE-S1-Drives.pdf
What kind of transformer do you guys recommend to boost the volts from 240 to 460? Installed before or after transformer?