Electrical Motors


Old 02-07-03, 07:10 PM
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Electrical Motors

I'm a woodworker and have a question about turning a motor on and off frequently. The motor is a 2 hp and is 220 volts it is used on my Dust Collection system in my shop will it hurt the motor to turn it on and off frequently or should I leave it on for a longer period of time. Thanks for the replies in advance.
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Old 02-08-03, 05:56 AM
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electric motor duty cycle

how many times per hour do you switch the motor on and off? the answer to your question depends on quite a few variables, such as duty cycle, type of motor, type of controller, condition of windings, starting load, etc. i would say that your switch will probably wear out before your motor does. motors are more economical when left on, instead of constant switching. switching them on, especially under load, causes a large "inrush" of current, sometimes as much as 6 times the normal operating current.

hope this helps,


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