Breaker in coach tripping when AC and Electric Hot Water Tank on

[ClementsRoc]

We took a class about the electrical system. He gave us a cheat sheet that spelled out how many amps everything took. It was amazing how fast things added to 30 amps. We also learned at that class that you may want to heat up the water heater water using propane anyway. Otherwise it may burn out the heating element if it is all electric.

[MNtraveler]

If I had on the A/C, water heater on electric and AC to DV converter (always running), I would be pulling 31-35 amps. You have to manage what I call the “30 amp allowance” carefully. (Also separately the 15 amp wall socket circuit.) See attached.

[08flagvlite]

Always check the simple stuff first. My Flagstaff V lite was having a similar issue, battery 2 I/2 years old, tripping the main when electrical appliances were operated with A/C on {single unit 13,500}. Anyway, the main plugs became scorched and the converter fan under the fridge seemed to run more than usual. Checked the battery and low and behold it was basically OUT of distilled water. That fixed my problem!!!! Randy

[cornddog]

Residential Breakers (the type used in RVs) are 80% rated breakers, meaning they will hold 80% of their rating indefinitely, when installed in an enclosure, in a 40°C, (104°F), ambient...or they are non-conforming. They are conforming if they are tripping at any current level above 80% in 40°C, or more, Ambient Temperature. The ambient of RV enclosed load centers are usually less than 40°C, and most breakers in most conditions will carry more than 80% of their rating continuously.
Breaker Trip Curves like the one presented are "open-air" curves and meant to show the 100% current, with tolerances, to show worst case scenario when designing the overall circuit protection and the load conductors they will protect. The conductors connected to the breaker are required to be rated at 125% of the breaker current rating so they will not overheat before the breaker interrupts an overload current. BTW. there are some 100% rated breakers, not residential type...but they have to be specially tested in their specific enclosures, not something RV manufacturers want or need to do.

[WildForest19]

Hey, I have read all the responding posts to your question/problem and, I was wondering if you have solved the issue. It just happens that I bought a brand new Wildwood 2019 delivered to my camp site on Friday, September 6, and I have the exact same problem. The pedestal breaker blows when the hot water and the ac is running at the same time.

[A32Deuce]

Do you have a dog bone for 30 to 50? I found when it hot there are more using 30 amp then 50. The 50 almost guarantees getting a full 30 amps. I do that in the summer.

[joshuajim]

I recently installed one of these from Amazon. At a glance I can see voltage and current plus other parameters. Best $20 spent.


[IMG][/IMG]

[TheWolfPaq82]

4 months and no reply from OP. Think he figured it out ??