THCAD-10 series resistor values

Plasma welding?
In that case we need to know how the pilot arc works exactly and what does it use to strike the arc.
Plasma cutting strikes the arc between the nozzle and the electrode on inside the torch, while cutting is done between electrode and material. Meaning the THCAD never sees the full brunt of the 20KV ignition on both leads, hence not a "big" deal to protect from it.
Tig pilot is between electrode and material, so is the welding, so attaching the THCAD to it would most probably mess it up, although i never tried it, well yet!
All that out of the way, there is always a way to wire THCAD safely to all those, wire it directly to the rectifier output inside the box/welder/plasma/tig, as all of those must have protection against those 6 to 20KV going back to the rectifier that is usually rated at 1000V.
I have several (6 or 7 or 9 or...) of THCAD300 working with high frequency/high voltage start plasma's, despite all the warnings that they should not be used in those cases, they are all fine and dandy working 10-12 hours a day, every day, except for some of them on Sundays. They are all wired to the rectifier.

chowderhead wrote:

Thanks for all your hard work - LinuxCNC is a gift to humanity!

I wholeheartedly agree.

Take some pictures of the insides and post them here.