Originally posted by robot
Dont use less than 4ga. 4 is listed as 60 amps capacity. Consult an electrican for specifics, the 30 ft shouldnt be a problem. What is your dryer breaker rated at?

Use only flexible cord that has the thick, black jacket. DO NOT use cable rated for interior wiring (like Romex) that uses solid wire!!!
I am thinking I might have too upgrade the 220 breaker for dryer,it has a 30 on the switch.I am thinking this means 30 amps,and the the welder is 48/42,am I correct?