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Old 09-21-2020, 09:36 AM   #1
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Electrical question

Does this panel (see picture) run on chassis batteries or house batteries? I'm asking this because I noticed when chassis battery switch was off I had no power to it.Click image for larger version

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Old 09-21-2020, 09:40 AM   #2
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Should be from HOUSE Batteries....items are HOUSE not CHASSIS items
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Old 09-21-2020, 09:41 AM   #3
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Sounds like you have you have answered your own question, travel safe.
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Old 09-21-2020, 02:15 PM   #4
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Actually I didn't answer my own question. I don't know which wire or wires powers the panel. If the wire going to cut off is red. Would the panel wire be on negative post on battery??? Here is pictures of chassis side and then full battery compartment Click image for larger version

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Old 09-21-2020, 02:24 PM   #5
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Did you buy your LaPalma new and, if so, was it wired exactly as your pictures show?

The two batteries on the right appear to have been added at a later date as do the wire looms.
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Old 09-21-2020, 03:06 PM   #6
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I bought it used and I replaced all the batteries 2 yrs ago. I took pictures prior to replacing batteries to make sure no problems when I rehooked up.
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Old 09-21-2020, 03:07 PM   #7
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I replaced batteries the exact size that was on old ones.
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Old 09-22-2020, 08:05 AM   #8
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Left bank appears to be flooded cell and so are probably chassis. Right bank appears to be sealed and so is probably house. Solenoid on back wall joins them together.

Apparently house bank is not connected or not charged.
Check voltage across each bank. Voltage should be greater than 12 volts on each.

Check Voltage from positive to frame ground. Again, voltage should be greater than 12 volts. If not, ground connection is loose or corroded.

I wish you good luck and happy trails ahead!
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Old 09-22-2020, 09:20 AM   #9
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The answer is both, at least in some circumstances. The primary power is the house battery bank, but in at least some situations the chassis battery(s) provide back-up via a solenoid that closes, placing the two battery banks in parallel.


That panel has switches for different systems, one of which uses 120v power and a few that use chassis battery for power but most of which rely on the house batteries.



Quote:
Would the panel wire be on negative post on battery???
No, the power panel should NOT be connected to the negative post. The negative should go directly to chassis ground, for both the house and chassis banks. All power consumption should be from the positive posts.


I see a manual battery switch in that photo. Is it by chance set to use only one of the battery banks? Or maybe to totally disconnect one or both banks? What choices are on the red switch and how is it set?
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Old 09-22-2020, 10:56 AM   #10
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Here are the 2 settings on switchClick image for larger version

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Old 09-22-2020, 02:46 PM   #11
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What you have is clearly not the original configuration of the RV electrical system so I would need to see it to figure out how things are connected.
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Old 09-23-2020, 07:26 AM   #12
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There are two of those switches - which one is the second set of photos showing? It looks to be the one on the right side by what would seem to be the house battery bank, but the label says "chassis battery".



Sorry, but those photos alone don't help much - we have no idea what the two different positions actually does. What do they connect or disconnect?


As SKP kirk says, the first step would be to make a map of what each cable does and where it goes.
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Old 09-23-2020, 08:20 AM   #13
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Like others mentioned, you need a roadmap to your battery connections: after verifying you have 12.5v or more in each bank,put a meter across the posts loads of the batteries and rotate the disconnect switches one at a time. See what they do, which bank they control. Now you will have a good start to figuring this out. Have someone looking at the panel inside while you do this.

I will tell you that most issues are caused by loose or corroded ground connections on the rig frame. I have come across this many times.

Good luck. You'll get it figured out will all of the help here.

I think of these type wiring issues as a roadtrip.....the battery is the start (point A) and the wiring are the roads I go down to get to point B.
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