Several more things to consider: ambient temperature and altitude. The Onans are rated at 500 ft ASL and 75 F degrees. Both factors reduce the generator's output considerably (3.5% per 1,000 ft altitude and 1% per 10 degrees). There is the distinct possibility that when you try to pull 25 amps out of the generator, you will find the voltage to be around 112 volts and not the anticipated 120 volts (7% more amps required). Another is a problem with A/C short cycling. My Mach 15 will occasionally stall the Onan 4000 when it short cycles on a hot day (105 F ambient).
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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