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Old 06-12-2011, 07:53 PM   #1
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Tripped Breaker

Need info fast..... I have an 08 Dynasty..... I was plugged up to my normal 50 amp source..... all three air conditioners were running..... I wanted to add a couple of pounds to one of my tires and turned on my air-compressor.... this tripped my 50 amp source..... I turned everything off and turned the 50 amp breaker back on...... with everything in the coach turned off, I turned my air compressor back on...... it came on and worked fine..... I completed airing up my low tire and disconnected the air compressor (the air compressor was plugged into the coach).... I went inside the coach and turned my airconditioners (two of them) back on..... nothing happened..... I checked what I thought was all of the breakers in the coach and they looked to be ok (I tripped several of them and turned them back on just to be sure)..... It has been 2 hours and my 50 amp plug has cooled down considerably and the air conditioners have not come back on.

My question is: Does anyone have any experience with what I have just described? Your input will be greatly appreciated.


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Old 06-12-2011, 09:24 PM   #2
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Well sounds like you just have to much of a load. Three A/C units running and then throw an Air Compressor in the mist! That would be my bet...

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Old 06-12-2011, 09:25 PM   #3
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Are your 110 volt lights, micro wave and other 110 volt appliance's working?
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Old 06-12-2011, 10:20 PM   #4
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Your 50-amp service has two legs. At least one of your A/C's run from the leg opposite to the one that powers your coach plugs (e.g. the air compressor); perhaps both of them do. Try disconnecting from park power and using your generator.

If everything works on the generator, turn it off and reconnect to park power. It may then work. If not, I'd suspect the coach transfer switch.
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Old 06-13-2011, 07:50 AM   #5
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Turn breaker off and on at the pedistal, sounds like one leg may have tripped. Both are supposed to throw when that happens, but the bar hooking the breaker together could be loose enough to allow one side to trip. Like another poster suggested, try the generator.
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Old 06-13-2011, 08:12 AM   #6
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Too much load explains why the air compressor being turned on tripped the mains. What doesn't make any sense is why many of the individual breakers were tripped.

FWIW, if this occurred when you first set up camp, your battery charger can be a sizable load. Some battery chargers can be configured for maximum current draw. If you routinely turn on all 3 A/C units, you may need to reduce the battery charger's maximum AC current setting. If you do reduce the battery charger's maximum AC current draw then you can expect to the batteries to take a bit longer to charge.

I don't practice turning all 3 of my A/C units at the same time. I let two run for awhile then turn on the 3rd.

One another item to check is the main plug connection to the pedestal. The pedestal may have been overused or have some corrosion that results in less than a perfect connection. If this occurs, the plug will get hot.

Finally, low voltage will increase the current it takes to power everything. Some parks have marginally acceptable voltage, especially in the heat of summer with a full park.
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Old 06-13-2011, 08:42 AM   #7
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As another advised, unplug the cord and start the generator. If everything works on the generator, that tells you that it is in cord to changeover box. If nothing still works, you know it is the outlet side of the changeover box. If the ac's work on gen. check all conn. from your plug to changeover box. If the AC's Don't work. Open changeover box and check wires for loose or burned. Next go to breaker box. Open it and check for loose or burned wires. (of course make sure all power is off when you do this.)
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Old 06-13-2011, 12:23 PM   #8
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After about 4 hours the air conditioners started working again..... after checking everything I now feel it was in my power management system..... I don't know this for a fact but now everything works..... this is the first time it has happened to me..... I very seldom run all three air conditioners at one time for this very reason (breaker tripping)..... it is hard to find a problem when everything is working.

Well, I learned something.

Thanks all you guys..... I appreciated the posts.

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Old 06-13-2011, 03:45 PM   #9
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Probably was the energy management, odd that it took four hours to restart the a/c's though. Could have locked them out due to the park voltage was too low, because if you were running all three, everybody else was probably fully loaded too. Most have a time delay built in to allow the refrigerant pressures to drop back down, but it is usually only a few minutes.
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Old 06-13-2011, 04:04 PM   #10
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Try this.. Unplug or trip your main breaker in the coach, (Just turning off the breakers is enough) If you have an inverter turn it off, DISCONNECT your house batteries. (Use disconnect) if you have a chassis disconnect turn it to the "Store" or disconnected position as well.

Wait five minutes

Now turn back on and plug back in.

The idea is to remove all power, not just 120vac but if the units use 12vdc for control you want to remove it too.

next step requires tools and meters.

I will add this: I have found many RVers have a few screws loose.. Like the ones that hold the wires to the circuit breakers.. UNPLUG before tightening.

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