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Discussion Starter · #1 ·
Is there any kind of in line filter to reduce HD from a generator when providing backup power? I was looking at using a portible propane generator to provide backup in case of outages but noticed that they don't really put out clean power. Is my only option getting a generator that produces clean power like a whole house standby?

I'm just concerned about A/V electronics, appliances and the electronics in my Lochinvar boiler.
 

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I own stock in FotoMat!
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Run the power through a clean UPS.
 
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Maker of Fine Sawdust
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Depends on how much and what kind of garbage is in the waveform. Are you getting a 120Hz harmonic or are the harmonics way up in the band? You could use a capacitor and a choke in parallel to the system to remove upper harmonics. If you have lower harmonics closer to the base frequency it may be difficult or impossible to remove them. Most filters that are passive operate at a max 12dB per octave.
 

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Discussion Starter · #4 ·
Way over my head Leo. I was just told that in need a generator with less than 5% total harmonic distortion and the one I was looking at had over 5% THD.
 
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