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Old 07-09-2016, 07:06 PM   #1
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Battery Disconnect Switch

Turned battery disconnect switch to off and began to remove battery--there still appears to be a draw--Sparking-- Tried turning switch to on --still a draw- sparking-- Any ideas ?
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Old 07-09-2016, 07:17 PM   #2
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Battery disconnect switch might just be for an inverter and not the whole system.
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Old 08-11-2016, 01:25 AM   #3
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Several things bypass the cut-off switch, for reasons that I don't understand.
I know the auto-level jacks do for sure, as do the trailer brakes.
There are other things too I believe, I just can't remember what they are.

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Old 08-11-2016, 07:11 AM   #4
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Co2 monitor, retracting step are possible as well.
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Old 08-11-2016, 07:45 AM   #5
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If the battery cut of switch is correctly wired, the only cable on the negative terminal will be the cable from the disconnect switch, along with the Break-away switch (Only on a TT).

If it is the RV you probably have the automatic transfer switch connected directly to the battery also, and that has a low voltage circuit board which will cause a small spark and eventually kill your battery.


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Old 08-11-2016, 07:46 AM   #6
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It's labeled wrong. I design battery disconnect switches, relays and systems for a manufacturer (Shallco, Inc.). http://shallco.com/502-series-batter...h-shallco-inc/

They are often used for system disconnects and in the case of RV's this would be a better lable.
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Old 08-13-2016, 10:44 PM   #7
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We have a TT with 2-12V batteries. I bought a disconnect switch but not sure the best way to install it (negative?) and where to put it. Two single battery boxes are outside on the A frame, behind the 2-30lb. propane tanks.
Can you give me some guidance?

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Old 08-14-2016, 11:13 AM   #8
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You definitely want to connect it on the negative line by default. Would need more info to answer the other questions. I'm putting mine in the pass through storage immediately behind the battery. You could I guess also get the cheaper 'throw' switch variety that connects directly to the negative terminal of each battery. This is a super easy, old school approach.
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Old 08-14-2016, 11:25 AM   #9
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Disconnect switch

Before I knew a little about Harvey the RV, I had no idea about the disconnect switch, other than the previous owner told me to switch it off if I was not going to let the RV sit for more than two weeks.

After going through two batteries at $180 each over the course of a month, I figured out that I just flip the switch ANYTIME I am letting Harvey sit.

I check to make sure the battery is switched off by turning the interior lights on, flicking the switch, and the interior lights go out.

Have not had to purchase a battery since.
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Old 08-14-2016, 01:32 PM   #10
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I installed one on my rig which has 2 batteries and after using it a few times and having the battery go down, I found that I had put it on the negative line between the 2 batteries.

I was only disconnecting one of the batteries.

Easy fix!
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