So I'm at work tonight testing a unit and it's giving me some problems. I shut everything down, open it up, and check things out. Nothing looks like it should be bad, but something's messing up. Odd.
I power it back up, and it's still messing up. Well most problems like this are due to test stand issues, so wiggling the cables obviously makes sense. Grab on, start moving them, arm shoots off of the cable in excruciating pain.
Apparently somebody at one time saw some wires that cracked, and instead of having the wires replaced, just wrapped them in electrical tape. Well the spot I was holding on to must have been pretty worn out, and I caught 270V DC through my hand and out my wrist which was resting on the grounding cart. That may have been one o fthe most painful things I've ever experienced. I'm lucky that didn't kill me. That supply will pump out 20A of current at 270V without breaking a sweat, so it probably could have done a lot more damage than it did.