Onan 5500 qg in 2014 bounder

[mojoracing]

Why does my power control system show only 40 amps when running on my generator? The gen clearly states on it that is 50 amps. When plugged in to my 30 amp at home it reads 30 amps and when at a campground and plugged into 50 amp service it reads 50. Is this 40 amp on the gen correct or is something wrong with gen or the readout?

[twinboat]

5500 watts divided by 120 volts = 45 amps.

Are you reading the breaker. Maybe it's a 50 amp surge capacity.

[mojoracing]

Never thought about that. I know that the 5500 watt rating is only at surge and normal is probably 5000 watts. Would this cross over to amps as well?

[mojoracing]

Found another sticker on gen that says 46 amps. Guess that is what it produces nominally which shows up on the monitor as 40 and under surge it can produce the 46 maybe? Not too well versed in this stuff.

[twinboat]

I am not familiar with AC monitors but I don't think it reads what your plugged into, but is set for what you have.
Maybe the settings go by 10s, so 45 is not an option.

[mojoracing]

It reads when I'm plugged in and automatically selects 30 or 50 amp. When I'm plugged into a regular 110 outlet while loading for a trip and such it reads 20 amp. I just find it strange that it reads 40 when on gen power. It also shows what sources such as a/c and fridge are drawing how many amps. Im wondering if its hooked up wrong as it shows the draw of the fridge but never shows the draw of the a/c's

[Gary RVRoamer]

The system detects whether the source power is 30A or 50A, which it does by measuring the available voltage. If it shows 40A when on generator, it must have a special input wire that tells it the genset is running, cause there is no way to distinguish that otherwise. The energy management system in my coach just says "Generator".

40 amps @ 120v is 4800 watts. Maybe they thought that was easier to comprehend vs 45.8?