Attributes . DC Constant Current 300A/32V/100%, 350A/28V/100%, 30-400 Amps, DC Pipe Current 300A/32V/100% 40-300A, Touch Start TIG(R) Range 250A/30V/100%, 20-250 Amps, Arc Gouge 300A/32V/100%, 90-300A Single Dial, Continuous Control 60V DC Max OCV At 1890 rpm . Names