Model SuperCut50P No255703962

I just would like to know if its a 220v 50amp plug or 110v 15 amp plug. At what amperage should I protect the unit ,is it 40 because its name plate says IMAX = 39 amps, but the power cord supplied and connected to the back of the unit is only 14 gauge which is rated for 15 amps.

Is there any internal protection built in to protect the unit at 40amps? Could I put a 50 amp plug on the cord connected to the plasma cutter, my only welder outlet is protected at 50 amps. I'd say no!

What is everyone else doing with there's? Thank you, Justin