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I disagree with Jack Mayer's idea that with solar a generator is most always needed. Unless one wants to run AC while not on shore power, a generator is not needed with a properly sized, installed and adjusted solar system.
I do not have a generator and do not want one!
I have 400 watts of panels, 6 - T105 6 volt batteries (675 amp hours capacity), a Blue Sky Solar Boost 50 controler and #2 wire from panels to controler to batteries. Wire loss is 1.5%. While boondocking, I use any and all (other than AC) of my electric appliances without hesitation.
With a 2000 watt inverter I use microwave, ceiling fan, electrolux vacuum cleaner for up to an hour at a time, skill saw, drill, blender, food processor, stereo etc. I use my furnace at night as needed.
I am experimenting with running my refrigerator on electric during sunny daylight hours to save LP gas while boondocking. This I just started and have no conclusions yet but it looks doable. The frig draws 450 watts @ 120 volts.
My system gives me much more power than I need to boondock comfortably. My only concession is to turn off the inverter at night to save a bit of power as it draws 2.5 amp hours at idle.
I learned from Handy Bob Solar Blog and renovated my poorly operating system, that was installed by experts, to his instructions. I have since met and spent time with him and he is living what he says in his blog, totally off grid 100% of the time.
We are living proof that a generator is not needed with a solar system unless you want to run AC when off shore power.
Since 11/09 when I turned on my renovated solar system I have used only solar to keep my batteries in tiptop condition even when plugged into shore power. I do not use the charger (converter) at all any more and do not need it.
To learn more Google : Handy Bob Solar Blog.
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Ralph & Snickers
2006 3500 Chevy Dually - 8.1 - Allison
2006 30' New Horizon - Solar
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