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Originally Posted by lpeterson
The single breaker on the top left side of breaker box above bed in master bedroom is the one that keeps tripping. I only use one a/c unit at a time.
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What is the rating (ampacity) of the breaker that keeps tripping?
Quote:
Originally Posted by lpeterson
The fridge is on the same breaker.
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As someone mentioned earlier, run it on propane. Or turn it off. Along with everything else that you don't actually need, like the battery charger and especially the water heater.
But why the fridge shares a breaker with an A/C unit is something I'd like to know. And if it's a propane unit, it'll draw a lot of power, whereas running on propane it takes very little (battery power) since the flame makes the heat, not an electric resistance element.
Quote:
Originally Posted by lpeterson
I think it is a 30 amp system. I think it just cannot keep up with this extreme heat.
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Is it the main breaker that's tripping, or a branch circuit breaker? The main will be marked 30A, and all branch circuits will have a lower number on the handle.
Quote:
Originally Posted by lpeterson
Wondering if the Fantastic fan could be of any use to help the situation.
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Sorry, but no. If you run it, you'll be pulling in outside air at 115F, or whatever temperature it is. The fan can be useful if the interior air is very hot and the outside air the fan will pull in through open windows is much cooler, but if you're running and A/C, you're working against it with that outside temperature. It's either A/C or ventilation, but not both, as a general rule.
Quote:
Originally Posted by lpeterson
The MH is parked outside our house which does not have A/C and plugged in to an outside outlet. The breaker inside the house only tripped when I made the mistake of trying to run both A/C units at once! We are using the motorhome to sleep in during this extreme heat spell.
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What is the circuit ampacity that you're plugged in to - 15, 20, or 30A? With nothing else loading the system, many people successfully run two A/C units on a 30A shore power system. Gotta turn things off though, especially high draw loads like the water heater, and possibly the battery charger if it's large and trying to bulk charge low batteries (mine draws 16A sometimes).
If it's 15 or 20A, you can run one A/C, but you still need to minimize the other loads. And all of that assumes the A/C units are clean and operating properly, since they will draw more current in really hot weather.