I bought this unit to replace a large transformer design UPS in a custom built cargo trailer of my own design. I have a microwave, a 55 inch computer screen, an electric refrigerator, electric cooktop, and 110 volt lighting, 1000 watts of solar panels ,and 8 AGM batteries. So far it has totally exceeded my expectations. The built in wattmeter is handy, though, for some reason it only displays when the load is above about 400 watts. The pleasant surprise is the efficiency is unbelievable, the no-load draw is almost nothing, this was a huge problem with the other unit. Be sure to wire it with at least (2) two. #4 gauge wires if you want anywhere close to the max power, disregard the little voice in your head that says you can run an a/c unit off it with a single 8 gauge wire. It will run an a/c it runs my 12,500 rooftop unit just fine but you have to have a massive battery bank, and a massive solar panel bank, in addition to large feed wires.. The wave form is strange as evidenced by my vintage clocks all running fast, but I knew about that....more important it has never failed to run any appliance, computer, power tool etc.
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