Hey all,
I am pretty sure this motor is fragged but I just thought I would throw this out for other opinions.
Have a 4HP 1PH 220 motor. Thing ran all day today, not overloaded or over worked. Finished a small run, shut down. Come back a half hour or so later, hit the switch, big hummm, a blade quiver (forward/reverse shiver) and pow, breaker pops.
Reset the breaker a couple times, no change. Blew the motor out with air, no change. Spins free by hand but even spinning several times it will not spin up. Just the hum and breaker trips.
Mark