We have much the same problem. On single 15 amp breaker is kitchen outlet (coffee maker, entire entertainment system, and electric fireplace. We have learned the 3 count. If there is 3 things on it will trip the breaker.
Just the heater draws abut 12.5 amps, thats all you can put on a 15 amp breaker.
Papa Bob
1* DW "Granny"
1* 2008 Brookside Sunnybrook 32'
1* 2002 F250 Super Duty 7.3L PSD
Husky 16K hitch, Tekonsha P3,
Firestone Ride Rite Air Springs, Trailair Equa-Flex, Champion C46540
"A bad day camping is better than a good day at work!"
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