If a motor runs on 230V at 47A, how many amps will it draw at 208V?

[drcampbell]

It also assumes the same efficiency, and the same I²R losses in both the stator and the rotor.

 

[StarCat]

Hey dave

Hey dave

Depending on the load and the motor a 230V motor will most likely run just fine on 208V.

Until a motor is loaded it will draw lower amps at lower voltage. I know that is not what everyone says but it is true.

If your motor is not loaded to the max and the manufacture says it is ok then I would have no problem trusting what they say.

That is one fine Tabby Cat.

 

[kwired]

We don't really know if OP's 47 amp motor is full load rated for 47 amps or if that is what it typically draws when in use.

exameninto

After recent OP posts, it appears the 47 amps was the required minimum conductor ampacity for the unit - already has 125% of largest motor rated amps included in that figure. Actual full load rating was 41 amps - at 230 volts.