I have used it in my garage and it blows the 15amp if I exceed the duty cycle. That’s easy since it’s only got a 20% so that’s 20% of 10 minute interval. If their is sufficient voltage drop the duty cycle gets shorter.
What are the potential hazards of the 277 to ground? The chassis and conduit could carry current. The ground could be wet and a shock hazard could exist. I think most likely the clamp will loose its connection and I will lose my full 277 and smoke my welder.
