TIG Welder For Material Type Mild Steel Stainless Steel For Maximum Material Thickness 3/8 in (Aluminum) 3/8 in (Mild Steel) For Minimum Material Thickness 0.004 in (Mild Steel) 0.012 in (Aluminum) Input Frequency 50/60 Hz Max Input Current 200A at 230 - 460 VAC 1ph 300A at 230 - 460 VAC 3ph Phase Single-/Three-Phase Polarity DC Series Renegade ES 300i Stick Welding Maximum Output Current 300 A Stick Welding Minimum Output Current 5 A