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Discussion Starter #1
A 20amp breaker, a switch. Turned the switched on and all I heard is hum noises for about 1 minute and the breaker trips. The motor wasn't turning. What can possibly be wrong?
 

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animal lover /rat bastard
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13,547 Posts
yep, definitely broken.
 

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Discussion Starter #8
Can it be just a bad capacitor? I know single phase motor needed a push unlike 3 phase motor. Like capacitor with start winding? I think it's called a centrifugal switch or something like that.
 

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IBEW L.U. 1852
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5,261 Posts
Its broken for sure.....most likely the start cap if one exists......if not the centrifugal switch for the start windings is likely fubared.
 

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Certified Organic A-Hole
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1,700 Posts
Can it be just a bad capacitor? I know single phase motor needed a push unlike 3 phase motor. Like capacitor with start winding? I think it's called a centrifugal switch or something like that.
Yes it could be just a bad cap. The centrifigual switch is what drops the start cap and winding out when the motor reaches speed.
 

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Discussion Starter #13
I'm looking at $8 for a capacitor or $250 for a new motor. Never change a motor before and not sure if the capacitor is safe to touch. Don't want to get zap.
 

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See if the cap is blown out, or has oil leaking out if it it is bad, but they can also go bad and not show any signs of it. I would take the back endbell off and look at the stationary switch as well, you can do that while the motor is in place. If it is a switch problem 9 out of 10 times its the stationary switch not the centrifugal.
 
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