The Miller Thunderbolt XL 225/150 AC/DC
A welding machine with advanced features such as infinite current control and Accu-Set amperage indicator that indicate the amount of current you are using for welding. Miller thunderbolt has Output selector switch allows you to quickly select AC, DCEP or DCEN without adjusting the output leads and Accu-SetTM amperage indicator which provides precise heat control with infinite amperage control. High DC weld output. Up to 150 amps. it also has fully varnished magnetic coils that protects and lengthens the life of the coils inside. Forced-draft cooling fan runs continuously and helps to extend the life of the power source.