The inverter has a maximum amount of power it can handle. An easy check to see if there are other 120 VAC outlets one can use is to have the coach connected to shore power. Turn off the inverter at the breaker box. Take an appliance and plug it into all the 120 VAC outlets in your coach. Remember which outlets allowed the appliance to work. These outlets are powered directly from shore power (no inverter). Try to use these outlets when using high electric usage appliances.
For me, I have labeled the outlets that the inverter provides power to. When we use the electric heaters, I always us outlets powered directly by shore power.
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