Part two. Operation and performance demonstration of Everlast,'s PowerArc 140 ST. The 140 is a inverter based DC stick/ lift start tig unit. Dual voltage capability allows unit to run on either 120 or 240V input with 50-60 Hertz.. Comparable units range from the TA S-95 to the Miller Maxstar 150. The unit affords economical operation and easy use.