The Honda inverter series generators, popular with RV's do not have the ground and neutral bonded. The ground is bonded to the genny frame.
This will cause issues with electrical management systems like the Progressive EMS. The EMS will not allow power through to the panel as it "sees" an open ground. With the Progressive EMS, knowing that is your issue, you can turn off the protection when connected to one of these open ground gennys.
This does not cause any GFI tripping in the trailer.
The fix for this is to take heavy duty 15 amp male replacement end and use a jumper inside the cover from ground to neutral, green to silver screw.
This takes care of the "open ground" issue error With the EMS.
You should also ground the generator if you can.
Oddly enough, and I can't get an answer why, this open ground with the Honda will not allow my hot water heater to run in the house.
I have a high efficiency AO Smith gas heater with electronic controls. The open ground allows the fan to come on, igniter to heat up, gas to flow and light and then it shuts off.
The "bonded male plug" solves my water heater issue.
Just though I'd throw this out for others that may be in the same boat we are in, using portable gennys for living.
Currently we are on day 5 without power, had 3 days with no water.
You get what you pay for. Our Honda 3000 is currently supplying our fridge, freezer, water heater, Keurig coffee, electric frying pan, 3 TV's although we have no cable. Several lights, phone and iPad chargers, laptops as needed.
Occasionally the Fein shop vac (like the Honda, powerful and quiet).
I also have 250' of 12-3 extension cord across the street to my neighbors house for their fridge, freezer, chargers and TV.
Last night we also plugged in one of those oil filled radiators for the bedroom.
The Cyclone is plugged in too. First two days that was where the hot showers were. Although we didn't fill the bath tub (lesson learned) I did put 120 gallons of fresh water in the trailer before the storm. The Cyclones gas tank was full too. Which is good, as gasoline is in short supply and rationed around here. Reminds me of the 70's. But back then the $20 limit would fill our cars!
Obviously not everything is on at the same time. The Honda inverter series use engine management to generate electricity. Meaning the engine speed varies with load.
I can hear the genny go up and down with speed, but in 5 days so far we have not tripped a breaker on it.
And, they are quiet. My generator is on my back deck. Standing in my driveway you can barely hear it. I can hear all the generators in my neighborhood though.