Step Up Transformer for Welding Machine

by Gregg
(Georgia)

Help -- Step Up Transformer for Welding Machine (CP-300 Miller):

Sir, I have an important question I need answered? I have a 3 phase power supply: 120/208/240 - (200amp box)....... Miller CP-300 wire welder set up to operate at 460v - 575v (30amp.). Can you tell me what size step up transformer I need in order to operate my machine proficiently? And if so do you have one in stock? I am trying to open my own modest welding repair and fabrication shop and that is the only thing preventing me from opening the doors... Anything would be a great help, thanks. GT.

Additional info: L1-120v/L2-120v/L3-213v........actual voltage readings on meter. I don't know what I have other than it's 3 phase. Delta or Wye? All I know is i need to make this work before I go so far in dept that I'm a statistic. I feel safe in saying it is 4-wire...... one being a type of ground.

HELP!!!