can i control a 240vac motor with spst switch?

jhconoverJune 12, 2013

Can I control a 240V motor using a SPST switch on one leg without causing damage to the motor if I leave the other leg hot?

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bus_driver

Yes.

    Bookmark   June 12, 2013 at 10:16PM
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brickeyee

Yes. it is done all the time.

Just keep in mind if you work on anything that there is still at least 120 V on the connections.

Disconnects open both poles for this reason.

    Bookmark   June 13, 2013 at 9:56AM
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Ron Natalie

To reinforce what BRICKEYE is saying, yes you can control the motor that way, but if you are using the switch as a REQUIRED DISCONNECT you need to remove all the hot legs.

    Bookmark   June 13, 2013 at 10:27AM
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