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Electric Motor Blows breaker

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kopeck

09-15-2007 12:45:48

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A while back I wrote about my Radial Arm Saw not running right and eventually figured out that it was because the motor was wired for 230v not 110v.

Since then it has run like a charm, until about two weeks ago.

Now it just blows the breaker as soon as a flip the switch. I've eliminated all the wiring from the plug to where the wire enters the motor (this includes the switch) so it's something internal.

I've looked for broken wires or anything else out of place but I can't find anything.

The only real oddity I found is I get continuity between the white and the black lead, which doesn't seem right (short?)?

There a mess of wires in there and I really don't know where to start.

This is a cap start motor if that helps, it also has a reset switch and and a relay.

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Leland

09-15-2007 22:04:30

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Re: Electric Motor Blows breaker in reply to kopeck, 09-15-2007 12:45:48

does it have a capasator check it

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Leland

09-15-2007 22:04:26

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Re: Electric Motor Blows breaker in reply to kopeck, 09-15-2007 12:45:48

does it have a capasator check it

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Dick2

09-15-2007 13:21:41

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Re: Electric Motor Blows breaker in reply to kopeck, 09-15-2007 12:45:48

There has to be a direct short somewhere. Hold one of the leads of your tester to the motor frame and the other lead to the black or white wires to determine if it is shorted to the housing.

Used to repair electric motors, but it's been more than 40 years since I worked on them.

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Dick2

09-15-2007 13:21:33

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Re: Electric Motor Blows breaker in reply to kopeck, 09-15-2007 12:45:48

There has to be a direct short somewhere. Hold one of the leads of your tester to the motor frame and the other lead to the black or white wires to determine if it is shorted to the housing.

Used to repair electric motors, but it's been more than 40 years since I worked on them.

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