Motor voltage range (208V-230V) vs house panel measured (245V-250V)?


New member
Sep 16, 2019
Los Angeles, CA
New owner of a Century V-Green 165 ECM16SQU variable speed motor as a result of this repair experiment. Noticed that the spec sheet for the new motor lists a compatible voltage range of 208V-230V, but when I measure the breaker panel voltage across the poles the meter reads ~250V rms. I have a 240V a/c unit that has been connected for years without letting out any magic smoke. Is there anything to be concerned about before wiring up the motor?


TFP Expert
Mar 2, 2011
As long as the voltage is not higher than 252 volts, you're good.

If it's higher than 252 volts, contact the power company.

Are you using a good "True RMS" meter?