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Old 08-07-2014, 09:13 AM   #1
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2014 27' FB International
Santa Rosa , California
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Cool AC and Micro Triping Breaker

We have a 28' Int'l. The 20A breaker keeps triping when micro/convection is on. Are there alternate wiring schemes or larger breaker solutions? Thanks

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Old 08-07-2014, 09:25 AM   #2
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Aldie , Virginia
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According to the dometic website, the 15k A/C draws about 3a for the fan and 13a for the compressor. I don't know the starting amperage but given the breaker, it can't be beyond 20. In my 2011 international, the micro-convection draws about 8 amps. So, yes - I would assume running the two at once would trip the breaker. My worry (for the experts) is if the micro convection is in use; and then the A/C attempts to start, could the low amperage available cause compressor damage?

I already assume not to run anything else along with the A/C - I'll even be sure to switch my fridge and water heater to propane if I know I intend to use the unit.

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Old 08-07-2014, 09:38 AM   #3
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I guess my first question is to what power source are you connected? Generator or land based electrical? Since the A/C and the micro are on separate circuits, I'd be suspicious of the source of power to the trailer. While the electrical panel could fit a larger circuit breaker, you cannot safely do so without upgrading the wiring to that breaker.

For example, when connected to 30 amp grid supplied power (like at a RV park), I can run both A/C and the micro. When connected to my twin Yamaha 2000's, I can run one or the other but not both.
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Old 08-07-2014, 11:02 PM   #4
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2014 27' FB International
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I have also checked with the factory and they confirmed that running both (off generator) micro/AC was not advisable. I am considering upgrading to 50 A, similar to the Land Yacht install. I got the specs from the factory and have asked for a quote from the dealer. Thoughts?
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