Some interesting discussion here! Let me add a couple of things. I'm going to assume from the description of "coasting" that this was not a reciprocating compressor but a turbine type.
1. If this is a power to close and power to trip type breaker, consider a control power source...
Electripete - Yep, count me in on the 5/6ths deal. I noticed that this has been sucessfully answered .. I think the kid's dad should go visit the teacher and make him pay up. I've got one that involves a triangle in the middle of a circle that we could send to the teacher. I bet some of y'all...
