voltage vs amps.
voltage vs amps.
(OP)
have you seen a point where voltage and amps are NOT inversely proportional ? i have a .75 hp 120/240 volt single phase split capacitor motor running at 16.7 no load amps @ 128 volts. When we run it at 120 volt, it runs back within its' rated amperage.





RE: voltage vs amps.
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I don't suffer from insanity. I enjoy it...
RE: voltage vs amps.
Your currents sound too high for no-load.
Yes, overvoltage can increase the current. But
128 volts does not seem like much of an overvoltage to cause that high current if 120 volts is the nameplate voltage.
Are you sure the motor is at no-load? Do you have the right cap on there.
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RE: voltage vs amps.
I have never seen that only worked with it in theroy. typicaly, most any electrical components can take up to 10%
variation. this is close.
RE: voltage vs amps.
I usually see similar single phase voltages on shrimp and lobster boats with nominal 120/208 volt systems. The panel meters are line to line, and the crews can't accept that 208 volts is normal and correct and jack the line to line voltage up to 220V or 230V.
As well as checking the capacitor, I'd consider reconnecting the motor and running it on 230V. (Or 208V)
yours