No - my water heater is gas fired. However, it has a forced exhaust, and the blower and control electronic plug into a standard 110v outlet mounted above the water heater.Isn't the water heater a 240VAC device?
Link please to the furnace THD requirement?
Note that THD is ALMOST ALWAYS a marketing number with ZERO effect on devices. In fact, the non-sinusoidal UPS step wave is better suited for virtually all electronics when compared to a sine wave output.
As for my furnace, it was in a document I got from Lennox (attached). I just went back and re-read it, and I guess I could technically go as high as 8% - but I was driving for 5% or less per the document.
Again, thanks for all the help, but I've really ruled out selling the generator and buying another one. Now all I want to do is connect it, safely. Sounds like the multicircuit switch (or individual switches) are the way to go.
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