GFCI Hums
The two GFCI's inside my Monty make a humming sound when running off of my Xantrax 1700 Watt MSW inverter. Any ideas why this would be the case?
Forum Discussion
They're running off an MSW inverter; you've (perhaps unwittingly) answered your own question.
MSW inverters by design do not output a clean sine wave, but a waveform with many high-frequency harmonics...some more so than others, depending on how well their output is filtered. This is causing something in the GFCI's circuitry to wiggle a bit and make noise.
MSW inverters by design do not output a clean sine wave, but a waveform with many high-frequency harmonics...some more so than others, depending on how well their output is filtered. This is causing something in the GFCI's circuitry to wiggle a bit and make noise.
