Can a three phase motor be run on a single phase supply?

No, a three phase motor cannot generally be wired to a single phase supply so, to run it on single phase you would need an electronic inverter unit or a rotary phase converter to generate the three phase supply. Such invertors or convertors are generally expensive to buy and the price will depend on the power of the motor.

As long as the power requirements of the equipment that you want to use the motor on are not too high for the biggest single phase motor available, it is usually best to see if you can part-exchange the three phase motor for a suitable single phase motor.

Another answer

Some three phase motors have all their windings brought out to terminals, usually two terminals per winding. So, if the motor has at least six terminals inside its wiring connections box and you can find out for sure that it was designed to be rewirable to run on single phase as well as on three phase - from the manufacturer or a qualified electrical engineer - then you should be able to connect them to run the motor on a suitably sized single phase circuit.

("Suitably sized" means that the circuit breaker and wiring is of the correct size to handle the current needed by the motor.)

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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.

Before you do any work yourself,

on electrical circuits, equipment or appliances,

always use a test meter to ensure the circuit is, in fact, de-energized.

IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB

SAFELY AND COMPETENTLY

REFER THIS WORK TO QUALIFIED PROFESSIONALS.

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