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Old 05-26-2018, 06:37 AM   #1
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Fire in front compartment 3456rl

I was lucky this was contained to metal box. Can you believe no breakers or fuses popped. Only things not working are battery charger and 2 rear ac units. Of ciurse I have disconnected everything and on to the dealer Tuesday. Smells like a burned down houseClick image for larger version

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Old 05-26-2018, 06:41 AM   #2
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Were you camping or parked? Shore power hooked up or not? Just curious what in the world could have gone wrong to cause this. What all was running? How did you find out this had happened?


To me (totally untrained in electricity) it looks like lots of "arcing" of electricity is what caused the damage - but what caused the arcing?


What year is your 3456-RL?
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Old 05-26-2018, 06:51 AM   #3
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Brought to farm on Monday. Plugged into 50 amp. Middle ac set to 82. Returned yesterday to this. There was a hard storm here 1.5 inches rain Tuesday. Normal 50amp cable with 50 amp 25 ft extention. Where the cables came together may have gone under water. Maybe lightning. The most disturbing was no blown fuses or breakers
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Old 05-26-2018, 07:00 AM   #4
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Thanks for the follow-up. That is scary. Hope you get it all fixed and back to normal soon.
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Old 05-26-2018, 07:08 AM   #5
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I've seen something like this posted maybe on this forum? Looks to me that was a loose connection causing excessive heat at the terminal block at relay hot side.
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Old 05-26-2018, 12:10 PM   #6
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I've seen something like this posted maybe on this forum? Looks to me that was a loose connection causing excessive heat at the terminal block at relay hot side.
You can just about guarantee that there were loose terminals.
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Old 05-26-2018, 12:29 PM   #7
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I had the same thing happen with my transfer switch a couple of years ago. No breakers to trip. Caused by loose wiring connection. After replacing the transfer switch I installed a smoke alarm in the area (under the bed) with a 10 year lithium battery.
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Old 05-26-2018, 12:31 PM   #8
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You can just about guarantee that there were loose terminals.
X2
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Old 05-26-2018, 12:49 PM   #9
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Yes, loose terminals. They will arc and overheat, but this does not increase the amp draw and won't trip a breaker.
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Old 05-26-2018, 03:04 PM   #10
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This type of problem I have seen in other type of equipment. I worked for 40 + years in electronic service & repair. A poor or bad connection in a junction/terminal block will cause a high resistance to current flow kind of like the heating element of a range. May not draw enough current to trip breaker but over time can cause the coating on the wire, the terminal (usually plastic) and area around the terminal to overheat and melt and smoke. Good news it smells bad and easy to find.


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Old 05-26-2018, 08:22 PM   #11
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I am sorry to hear this and hope you get back up and running again... BUT I HAVE TO ASK... The TWO rear A/Cs do not work, how many do you have?
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Old 05-26-2018, 08:25 PM   #12
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I have 3
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Old 05-26-2018, 08:26 PM   #13
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I have 3
Well that should get the job done!
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Old 05-26-2018, 08:28 PM   #14
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42 feet in Texas heat. 3 are needed
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Old 05-26-2018, 08:30 PM   #15
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42 feet in Texas heat. 3 are needed
Two in our 36ft makes it a meat locker, but this ain't TX!
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Old 05-27-2018, 07:20 PM   #16
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The main cable from truck to the "metal" box up underneath the 5er hitch came loose and wires shorted to main "metal" box...Noticed this while refuelling truck and sparks everywhere around "metal" box....Pulled cable from truck and disconnected cable from battery...........Fixed temp until I got home.........At home I replaced the "metal" box with a plastic electrical box and soldered all the connections....NO Marettes!!! Then taped all up really well....Three years and all is good!!!!
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