This portable moving coil tpye AC Arc Welder performed 200AMP output and is armed with automatic temperature control and wind-cooling device for ensuring long-term efficient and safe work. It is design with 110/220V 50/60HZ A.C. power. The quality is steady and reliable with good performance for thick and thin board welding. You can use single-phase power, especially suitable for mobile and field operation. USED ELECTRODES Rutile 5/64" to 7/32"