electric motor voltage

Jan 25, 2006 3 Replies

Anyone know if a standard GE or Dayton motor rated at 220/240 volts can be easily wired to run on 110/120. Most motors seem to have the option for both, however if it doesn't state it on the nameplate can it still be done and how? Thanks - Ken


If it doesn't have the 120v ratings on the nameplate it probably can't be wired for 120.

Would it be feasable to use a step-up transformer and what size(watts) would I need for a 1/4HP motor running a small air compressor? What transformer lifespan could I expect if the motor is run on a 15 minute on/off cycle year round in temperatures ranging from -30C to +30C? It is used to aerate a septic system. Would it use the same amount of electricity as using a regular 220volt circuit? As you can tell I'm not an electrician! Thanks for any info. Ken

Could be done- you would need at least a 500 watt transformer (allowing for power factor and efficiency of the motor) and it will have some losses. Frankly, unless you can get a good one cheaply- why not just replace the motor?

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