honda 3000 -running 13,500 overload

Did it ever work?

+1 to check the start capacitor or have a mobile RV tech do it.

One other thing is make sure you are using the 3 prong plug and not the 20 amp plugs

Quite often this is where a "hard start capacitor" might save the day, assuming that all the equipment is already functioning correctly.

Or they are at high altitude where its not as efficient.

That Honda should be capable of running that A/C with out even struggling. Either something else is on that you are not aware of or that Honda needs service.

converter / water heater

start generator BEFORE you need the A/C, charge the batteries before turning on A/C, run A/c on "FAN" while charging

do NOT wait until the RV is HOT to start the A/C, let the compressor start working early

if this doesn't do it, get a NEW 'run capacitor' for the A/c
the old one might be bad

petebetho wrote:
my Honda e3ooo is operating my dometic 13,500 ac overloads frig on gas all breakers off except main & 20 amp ac please help

Make sure the converter is off as well and not attempting to charge the battery.