Can anyone tell me the battery specs for a Dometic LW3000 Generator?

If it does not have an hour gauge you cant

Not sure but it sounds like your generator is too small for your A/C..

Are both the test breakers the same size (15A or 20A, etc)? Perhaps the breaker in the RV has a lower amp rating then the other one you are testing it on? If that's the case your test doesn't really tell you anything, they both need to be the same size to know where the problem may be.

You didn't indicate a Spec number for your gen that would be required. Any RV place can get this part it is Cummins part # 149-2513 but a Spec number would help.

What size & type generator? On start up the AC unit can draw as much as 17-18 amps in some cases, and if your generator is not designed for a quick draw like that it will die.

contact the mfg. of the unit, or specs should be on tech sheet

Pat,

12.3 amps @115 volts says the spec -- this is 1400+ watts. A 2000 watt generator should handle it nicely.

Charlie

I take it you have RV plugged into generator. Hopefully direct with no extension cords. Are you using a 30 to 15 amp adapter to plug into generator? What is the rating of the breaker on the generator that keeps tripping, suspect it's only 15 amp?

Check a see if it is when the unit is starting up when the over load happens if so you need a hard start kit