I bought the PP60C, my CNC table manufacturer said a 20:1 arc voltage was reccommended, but he also told me to hook it up to the full arc voltage, which I guess has a 100K resistor already in line.

I tried hooking it up to the 1/16 voltage divider (at his request), the torch basically just sat on top of the material and would not move unless I pressed the manual 'move' button. If I hook it up to the 'full' arc voltage, the THC will raise the torch about 1" off the material.

He told me to run a 100K resistor off the table ground (inside the machine), to the (+) side of the control box (THC), and connect the (-) main wire going to the torch.

If the CNC plug has a 100K resistor in line, why does this not already work for me?

Thanks