If connected to your camper, you might be exceeding the generator's capacity because: the water heater is on electric, the microwave, television, refrigerator on electric, and radio in your camper could be pulling parasitic power when not actually turned on. The converter in your camper is running, charging your batteries. Add it all up together, and might not be JUST the air conditioners pulling the load, but everything else in your camper combined with the 2 air conditioners that is exceeding the limits.