There is quite a bit to take into account before dialing in your welder settings. Your main power from the building will have a large effect on how the welder performs. Knowing what length of wire is going from your main panel to your welder plug is important just as well as if you are using an extension cord beyond that. Every extra foot of distance you add inbetween the welder and the power supply makes a difference. These things need to be accpunted for when adjusting your settings. If you ha