Funny you bring this up. I got nailed by one of our old Hobart GPU's 2 weeks ago. It had a coolant leak I was repairing. When the A/C tech fired it up I was up on the unit checking for leaks. I found a loose connection after it lit my ass up. Ours are 90kva and 400hz. They only run the APU's when needed. It consists of about 5 minutes before the GPU is pulled off the gate. They have been reducing APU run time for a while trying to save on the cost and maintenance on them.


.