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Note on Electrical safety

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Note on Electrical safety

Postby Charles » September 20th, 2010, 5:51 pm

This came up on CES today in reguards to a statement about an air compressor problem and also asking a question about air compressor sizeing.

This post is in reguards to the individuals problem with the air compressor, the individual had trouble shot the motor thinking the start / run capacitors are bad.

ANYONE starting to trouble shoot a capacitor had better be sure to make sure the cap. is discharged. Take a dry screwdriver or any metal object with a well insulated handle and place across the terminals to discharge the device. It will also help to then touch the terminal to ground before you place your hand on a terminal.

WARNING if the cap. is charged the least you will get is a nasty electrical jolt, the worst well it can stop your heart.
A capacitor is a true electrical storage device, the charge a capacator has depends on the part of the cycle of the AC current was in when it was disconnected from the line, thus the device can have anything from 0 volts thru 275 volt charge if is operating in a 230 volt AC circuit.
Nearlly all of us has a cap start and or a cap run motor on thier air compressor so be aware it can bite!

Charles
Charles Mckenzie
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Batesville, AR 72501
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Re: Note on Electrical safety

Postby Kiko » September 20th, 2010, 6:50 pm

Hi Charles,

Sorry for the ignorance, but I only understood a portion of what you said... :oops: Can you maybe show a diagram of what parts are that you're referencing (the cap and capacitor)? Thanks, Kiko
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Re: Note on Electrical safety

Postby Ken Cox » September 20th, 2010, 7:18 pm

When I went to refrigeration school we learn a lot about run and start caps,the hard way,instructors had a good time.

Kiko here are several flavors of start and run caps http://www.google.com/images?hl=en&rlz= ... 62&bih=685
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Re: Note on Electrical safety

Postby Charles » September 21st, 2010, 6:00 am

Ken, Thanks ! Kiko they are usually a cylinder in shape with a couple terminals on them, usually thay lay under a cover of thier own thus the bump on the top of side of an electric motor .
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