150 Amps to 200 Amps
Portable arc welders between 150 Amps and 200 Amps use 3.2mm and 4mm coated metal electrodes to provide an electrode, filler material and shielding gas in one process. These typically portable machines rated between 150 Amps and 200 Amps are a constant curreent power supply and are perhaps the most widely used welding machines in the world.