Arc stretch and drag-cutting

Stretching the plasma arc for long periods decreases the duty cycle.

Whenever possible, drag the torch on the workpiece. Refer to Start a cut from the workpiece edge.

The image shows a torch dragging versus a torch off the workpiece.

If you operate the plasma power supply on a lower rated electrical service, stretching the plasma arc for long periods can cause the plasma power supply to overheat more quickly and can cause the circuit breaker to open (trip).