We have a 2014 Grand Design Momentum 355TH with a Cummins Onan RV QG 5500 EVAP generator. From everything I have read this generator it is a 50 amp generator. Even the labeling on the outside 'Shore power' says 50 amps and the generator has 2 x 30-amp breakers in it too. I find it odd how after we power on 2 A/C's, refrig, water pump and a couple other things it is around 39 amps but once it gets past 40 amps it acts as if it gets tripped and never reaches 50 amps. So once it is tripped (or overloaded?) now both A/Cs power off and generator goes back to idle and my EMS Control panel goes blank. I checked that both of my 30-amp breakers are just fine. Eventually the 'power' EMS control panel lights up and shows GEN and then after several minutes the other right lights up (W/H, A/C-RR, A/C-FRT, A/C-MID) as if it reset itself. Then I can power up both A/C units again. If I only run the 2 A/C's, have the refrig on Propane and all other main switches off, then it stays consistent around 30 amps and on some hot days it gets up to 35 amps based on what the Power Control system states.
So is it normal for this generator to not support true 50 amps? Just an FYI, I have done the complete maintenance on this generator such as oil change, oil filter, air filter, Fuel Filter, Fuel Pump, and replaced both 2 spark plugs (with proper gap) plus even did the SeaFoam cleaning of the carb too. I'm scratching my head thinking it should do more then 40 amps or am I thinking incorrectly?
So is it normal for this generator to not support true 50 amps? Just an FYI, I have done the complete maintenance on this generator such as oil change, oil filter, air filter, Fuel Filter, Fuel Pump, and replaced both 2 spark plugs (with proper gap) plus even did the SeaFoam cleaning of the carb too. I'm scratching my head thinking it should do more then 40 amps or am I thinking incorrectly?
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