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Old 09-04-2016, 09:41 AM   #11
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I have a similar issue. One day 12V system working great, next day nothing works on 12V, but works fine when plugged in. I did not do anything between those 2 days except unplug/replug the 120V.

Checked the battery and it's showing 11.5V. So it's not been charging. Checked all the fuses inside and underneath and next to the battery and under the tongue and all are good.

I need help on what I'm seeing underneath the tongue. First picture is overview. Second picture is a terminal block or ??? that I'm asking about. It has 11.5V showing across the 2 connections. I would expect 0V if it's just a terminal block, so I'm wondering if it's a fuse or something that's blown. Seems like this is the path to getting power to the big metal box where all the connections are.

Any ideas?
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Old 09-04-2016, 01:09 PM   #12
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Looks homemade to me. The box looks like the standard electrical junction block used in homes.
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Old 09-04-2016, 01:21 PM   #13
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The item you are calling a terminal block is a circuit breaker. There should be a very small button on the side of the terminal block push this button that should reset your breaker.
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Old 09-04-2016, 09:13 PM   #14
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CLR, you are right. That's exactly what it was. Battery is charging again.
Thank you very much!
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Old 09-05-2016, 12:21 AM   #15
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Quote:
Originally Posted by rcrodriguez View Post
CLR, you are right. That's exactly what it was. Battery is charging again.
Thank you very much!
Just for info, the most common cause of tripping this breaker, is crossing the battery wires.
Usually happens when installing the battery.
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Old 09-05-2016, 09:15 AM   #16
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My cause was something else. I haven't touched the battery since I've had the RV. (Only 6 weeks.). If it trips again I'll investigate what else may be causing it.
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Old 09-05-2016, 10:19 AM   #17
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My cause was something else. I haven't touched the battery since I've had the RV. (Only 6 weeks.). If it trips again I'll investigate what else may be causing it.
If you haven't touched the battery in 6 weeks, and the camper isn't plugged in, the battery is dead. The circuit breaker (or the battery fuse or reverse polarity fuse in the converter) often pops when a WFCO converter attempts to recharge a dead battery.

When in storage, there are parasitic battery draws that run your battery down. With a good battery, this will normally take about 2 weeks. The propane/CO/low voltage alarm is the biggest culprit. In my A-frame, the stereo likes to turn itself on, too. The low voltage alarm may/may not chirp loud enough for you to hear it outside the popped down camper.

Bottom line is that you need to disconnect the battery when not using the camper (and it's not plugged in). I eventually installed a battery disconnect switch because I'm lazy, but got tired of replacing dead batteries.

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Old 09-05-2016, 10:49 AM   #18
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I don't normally disagree with Dan , but I'd think the most common cause for tripping the 'ShortStop' (circuit breaker) is plugging in shore power and the converter trying to charge a dead or severely depleted battery.

Quote:
Originally Posted by rcrodriguez View Post
Second picture is a terminal block or ??? that I'm asking about.
From the looks of the terminals in the second pic, I'd be reterminating all those connections. Looks like there's some pretty good corrosion, especially on the junction box side. Wouldn't hurt to cover them with dielectric grease once you've reterminated them.
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Old 09-05-2016, 05:39 PM   #19
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When I said I hadn't touched the battery, I meant I'd never connected/disconnected it. I've been regularly using or maintaining the RV, and plug it in at least each weekend.

Agree the connections need some work. It's been added to the list!
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Old 09-06-2016, 01:40 PM   #20
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Sometimes if the battery is a little low and you use a large draw device (i.e. slide or landing gear) it will blow the 'ShortStop' because the low voltage will cause a higher than normal current draw.
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