Soleste23
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- I have never seen a 120 volt three phase motor.
I have just started my electrician career and I am studying electric motors. why an 120v ac motor can not be 3 phase ? .
Understanding AC Motor Basics: Why a 120V Motor Can't be 3-Phase
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Are you aware of any 3 phase power sources that are 120 volts leg to leg?Soleste23 said:
Dullard
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There's no physical reason that a 3-phase motor can't be 120 Volt, but it would require a 3-Phase 120 VAC supply (which is not a standard anywhere that I know of). In the US, the lowest common 3-Phase voltage is 208 VAC - that's 208 VAC L-L and 120 VAC L-N.
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Something to think about: A VFD driving a three phase motor would output 120 volts at about half speed in order to keep the frequency to voltage ratio correct.