Good Sam Club Open Roads Forum: Battery Disconnect... What does it disconnect??
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 > Battery Disconnect... What does it disconnect??

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RambleOnNW

Pacific Northwest

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Joined: 08/06/2010

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Posted: 11/19/20 02:29pm Link  |  Quote  |  Print  |  Notify Moderator

What the battery disconnect does disconnect depends on how the 12 volt system is wired. On our rig the battery disconnect cuts off the entire house 12 volt system but the house batteries will still charge from the converter if external AC plugged in.


2006 Jayco 28', E450 6.8L V10, Bilstein HDs,
Roadmaster Anti-Sway Bars, Blue Ox TigerTrak

DrewE

Vermont

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Posted: 11/26/20 10:37am Link  |  Quote  |  Print  |  Notify Moderator

There are variations in how things are wired.

On my motorhome, on one side of the disconnect are the house loads, and on the other side are the battery, converter, battery combiner relay (which allows the alternator to charge the house battery when the engine is running), and a couple of always powered loads--the entrance step and the dash radio clock/memory line, I think.

Often the converter is separated from the battery by the cutoff switch and so always connected to the house loads, rather than being connected to the battery and isolated from the house. Sometimes there are other always-on circuits, such as the propane and CO detector, slide motors, etc. On travel trailers, the emergency breakaway brake system should always be unswitched.





doxiemom11

Victoria TX

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Posted: 11/26/20 08:29pm Link  |  Quote  |  Print  |  Notify Moderator

We have 2 disconnect switches. One for the engine battery and another for the house portion.

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