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Author Topic: Voltage Problems  (Read 727 times)
Lester
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« on: November 19, 2007, 07:21:33 PM »

Parked in a campground that has a 30 amp service, you have an inverter that's hooked to four 8D batteries. It is a 24 volt system.You plug into the 30 amp shore power. The inverter is shut off. If you are drawing more than 30 amps in the bus, will this run the batteries down? If this is the case, please explain. If you are using more than the 30 amps, should it not kick the breaker on the post outside?
Lester
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Nick Badame Refrig/ACC
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« Reply #1 on: November 19, 2007, 07:24:00 PM »

Hi lester,

First, what inverter do you have?  Most inverters that have an internal transfer switch will isolate you from inverter power while you are plugged in to shore power.

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Lester
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« Reply #2 on: November 19, 2007, 07:58:57 PM »

Nick
We have a Trace inverter -3600 watt -model # DR 3624. We are installing a Vanner 60-10B battery equalizer. We are taking our 12 volt off one of the batteries , hooked to a 12 volt bar. To keep the batteries charged to accomodate the 12 volt, won't the inverter have to be running when you are plugged in to shore power?
Lester
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gumpy
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« Reply #3 on: November 19, 2007, 09:05:23 PM »

In your original post you said the inverter was shut off. In this case, no, it won't run down your batteries. If you draw more
than 30 amps, the power pole breaker better trip, or there's a significant problem with it, and a serious danger.

In your second post, you said the 12 volt was tied to the batteries. This will, however, run down your batteries.

If your inverter has a charger built in, which I believe that model does, then yes, you should have it turned on when
plugged in to charge up your batteries. It probably has a transfer switch in it, also, and if I'm not mistaken, the transfer
switch will not switch unless the inverter is powered on, so unless you are somehow bypassing the inverter with shore
power (external transfer switch or your shore cord feeds your distribution panel directly), you probably need to have
the inverter powered on.

More infor on how your bus is wired would be needed, though, but in general, a powered off inverter uses no power, but
a 12 volt system does.

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niles500
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« Reply #4 on: November 19, 2007, 10:32:47 PM »

Lester - your inverter is more than likely equipped for "load sharing" which will supplementaly discharge the batteries to make up for current overloads until the current draw subsides and the 3 stage charger re-engages - but only if the inverter is hooked in - if disconneted (switched to shore power only) the system runs like any other AC load and the breaker should trip like any other overload condition  - Hope this is clearer
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