Compressor motor drawing twice the amps it should

by Bill
(Tuhledo Ohio)

It's a relatively cheap but seldom used central pneumatic compressor, since I bought it new it's always had trouble starting, would trip the breaker several times before actually running, definitely could not run in the cold or on a extension cord.


Well now it would barely start running and trip, trip trip the breaker.

Had a spare slightly higher Uf capacitor so changed cap out and wow, takes off right away, but the amps are about 33 amps and never come down before tripping the breaker after about 10- 15 seconds.

Spins pretty freely by hand, so really confused right now

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Jul 09, 2017
Start Capacitor?
by: Doug in s.d.ca.

Or run capacitor?

If start, then it shouldn't make any difference once it's running.

If it is a run capacitor, it can make a big difference in current.

Maybe a model number for the thing, too?

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