919.165510 Craftsman 30 gallon blowing breaker

by Joe
(Texas)

919.165510 info plate

919.165510 info plate

919.165510 info plate
919.165510 information

Model #919.165510
GE Motor Part No. D23360

No previous problems, compressor suddenly started tripping the breaker.

Resistance measurement between power cord terminals = 0.4 ohms. I had a friend with a similar compressor test resistance between power cord terminals & he got 0.5 ohms, so I don't think my motor is shorted (neither terminal shows anything when tested against earth/ground on my meter @ 20M ohms = open).

Start cap circuit verified to be working (drilled through plastic cover to attach test wires to verify centrifugal start mechanism works / start cap is engaged). I've replaced the start cap just in case since I found a new one fairly cheap on Amazon.

I've disconnected the pump from the tank, so the unloader valve is not an issue (0psi).

The motor spins very briefly when powered on, but immediately trips the breaker.
Motor spins freely with no grinding noise or feeling.
I've moved the compressor to a different outlet closer to the breaker box (~3ft) & the breaker still trips.

Comments for 919.165510 Craftsman 30 gallon blowing breaker

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Dec 13, 2016
Ammeter
by: Doug in s.d.ca

You're right. and a conventional meter wouldn't do because most are DC only.

You'd need a peak reading clamp on AC ammeter to do the job.

Good luck finding a motor shop.

Dec 13, 2016
thanks for the reply...
by: Joe

Thanks for the reply. I've pretty much given up on it but hoped I was missing something. I'll see if I can find a shop nearby to work on it (and if it's worth repairing).

I can't really use an ammeter on it if it's tripping the breaker as soon as I turn it on, can I? The meter I have now only goes to 10A, so I know I can't use the one I have.

Dec 13, 2016
919.165510 blowing breaker
by: Doug in s.d.ca

Sounds like you've done everything right.

Even though it seems a small difference, I'm afraid the .4 vs .5 ohm readings probably indicate a partial short between the windings of the motor.

If you can, try an ammeter on it - the DC resistance can vary greatly from impedance (AC "resistance").

A visit to a motor shop, if you can find one, should get you a definitive answer.


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