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07-11-2015, 04:46 PM
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#1
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3 Rivet Member
beaumont
, Texas
Join Date: Dec 2012
Posts: 148
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tripping breakers
Hello all.. I have a 75 international, new PD converter, one year old battery, one year old Dometic 13,500 air conditioning. I can run the a c while on shore power, and it will run for about an hour, then the breaker in the trailer trips. I have it on shore power all the time, and when I went to it today, the 12 volt side of the breaker had tripped. No, charging, no lights etc.Reset the breaker, and it stayed on. Could someone help with diagnosis? I am thinking weak or faulty breakers, but I am not the electrician. I did have the PD professionally installed. ( good buddy who is an electrician), he has done several of my trailers.
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07-11-2015, 05:00 PM
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#2
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Rivet Master
1991 34' Excella
Princeton
, New Jersey
Join Date: Aug 2003
Posts: 7,070
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breakers age. First option change to a new one. If that still fails get a clip on amp meter and read the current at the breaker. Breakers should be able to carry 80% of the stated value. If the current is higher than that make sure you don't have any other load on the breaker besides the AC
__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles
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07-11-2015, 05:40 PM
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#3
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2 Rivet Member
2006 30' Classic
Santa Fe
, New Mexico
Join Date: Jun 2014
Posts: 96
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I've got a similar problem. When i switch the step light on the breaker pops and the AC goes off. Getting ready to replace the step light fixture to see if that will solve the problem.
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07-11-2015, 05:41 PM
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#4
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3 Rivet Member
beaumont
, Texas
Join Date: Dec 2012
Posts: 148
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breakers
First, thanks for the help.. I looked at your tow vehicle, how do you like the excursion? Is it a diesel? I am thinking of getting, one, I want 7.3 or 6.4, if I can afford it. Do you know a source for the breakers? i am sure they are some oddball kind, thanks again,
Richard
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07-11-2015, 06:13 PM
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#5
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3 Rivet Member
beaumont
, Texas
Join Date: Dec 2012
Posts: 148
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breaker
Seem like this is a common problem . Does anybody know the type of breakers and where to get them? I have 2 20 amp, a 15 amp and a 30 amp for the box.
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07-11-2015, 06:19 PM
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#6
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Rivet Master
2002 30' Classic S/O
Garden Valley
, Idaho
Join Date: Jul 2010
Posts: 1,631
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Quote:
Originally Posted by Dixie722
First, thanks for the help.. I looked at your tow vehicle, how do you like the excursion? Is it a diesel? I am thinking of getting, one, I want 7.3 or 6.4, if I can afford it. Do you know a source for the breakers? i am sure they are some oddball kind, thanks again,
Richard
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Do not get the 6.4 or the 6.0; the 7.3 and the 6.7 are fine, no problems. One suggestion when you are running your AC is to leave the cabinet door open where the breaker box is housed. On a real hot day, mine goes off too, but when I leave the door open, it doesn't.
__________________
2008 F-250 4X4 Lariat V-10
2002 Airstream Classic 30' w/SO #2074
2007 Kubota 900 RTV
1996 Ford Bronco
2007 Lincoln LT
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07-11-2015, 06:29 PM
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#7
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Rivet Master
2014 31' Classic
2015 23' International
2013 25' FB International
Apache Junction
, Arizona
Join Date: Sep 2012
Posts: 6,214
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The two circuits on a 1" breaker get really hot when the air conditioner starts. Per the National Electric Code, a breaker should not carry a constant load that exceeds 20% of the breaker's capacity, or 16 amps on a 20 amp breaker.
I would suggest rearranging the breakers so that the air conditioner breaker has one side in free air inside the box. That would help it dissipate the heat generated.
Also make sure all the load wire screws on the breakers are torqued to the proper value. If they are loose, that creates more heat.
__________________
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC
TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell
2014 31' Classic w/ twin beds, 50 amp service, 1000 watt solar system, Centramatics, Tuson TPMS, 12" disc brakes, 16" tires & wheels
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07-11-2015, 07:33 PM
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#8
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3 Rivet Member
beaumont
, Texas
Join Date: Dec 2012
Posts: 148
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breaker
You know, I never thought of the heat, It is definitely hot in the rear of the trailer, I think I will do both, leave the door open for a while, and re arrange, sounds like a good idea, I still want to change them out, due to age..
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