400A DC inverter welding machine, suitable for long welding electrode
Diameter 4 electrode.Inverter welding machine load rate is generally 60%, 60%, load rate of about 250 or above. Electrode selection current formula is the diameter of the welding rod x (33-55) times = welding current.220 the maximum electrode current is about 4. Current output of welding machine.
Mainly depends on your welding machine load rate of 45%, then the current is about 180A, 60% of the current is about 240A, with experience that is 3.2
3.2.................. But it depends on what you're welding