Welding Amperage Metal Thickness. The Type of Gas You Use. I agree with these guys completely in wire feed there is no substitute for power even on thinner metals.
Ad Find China Manufacturers Of Welding Wire. You might also find our welding calculators useful. And its used on pipe with wall thickness over 1 as well.
The photo shows the set up for gasless with a positive earth.
Optimize your operation through advanced welding processes training and weld data monitoring. You wont find AWS guidance for settings. Welds mild steel up to 4mm thickness. Some welders say 18 of inch or more.