I got an Air Compressor in my garage. It's just a small household type, not the large ones used in service garages. The motor is free, and turns easily by hand. The other day I plugged it in and had to fill a tire. It started, but would quit running for a few seconds then go again. At the time I thought the pressure control was dying that turns it off and on, but it did finally pump up to full pressure.
Today I plugged it in again, and the motor will not start. It hums, but will not start at all. The weird part is that all the lights in the garage get very dim, which includes the compact florescents in the ceiling lights, and the 100W indecesant flood light outside. What is even more strange, is the fact that the breakers do not trip, even after leaving it plugged in for approx. one minute. What the heck is going on?
Note, the motor is a 1/3HP 120V capacitor start motor. The wiring in the garage is all new as of one year ago. The lights are on a different circuit than the compressor outlet, which is mounted directly below the breaker box, and has its own 20A breaker. Therefore, I can be sure the wiring is not at fault. Just for the heck of it, I have an outdoor receptacle on a GFCI. I plugged the compressor into that outlet, and the GFCI did not trip either.
I have done wiring and electrical stuff for many years, and this one is just too weird....... All I can figure is that the capacitor is bad, but I'd still think the breaker would trip.
Anyone got any ideas?
PS. My 240V well pump also runs off the garage panel, and works fine.
Mark