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Old 07-06-2014, 10:02 PM   #11
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Good questions as to why the converter needs to be turned off, but here is what inverter manufacturer says:
"Turn off converter when using inverter to prevent extra battery drain "
Not sure I understand but trying to figure out how to turn off/disable converter. My setup will be to run shore power cord back to inverter and plug into with 110 pigtail. With three 12v batteries I hope to be able to operate TV, computers, microwave, etc. when dry docking overnight when on the road.
Batteries stay fully charged with two 100watt solar panels when in dry storage.
You're expecting to run a microwave off a 300watt inverter?
Not possible...was that a typo?

What brand/model inverter is being installed.
If you do want to turn the converter off...the breakers above should do it but unless I'm missing something major, I don't think there should be an issue with leaving it on.
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Old 07-06-2014, 10:30 PM   #12
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Per the OP last post, he is going to plug his shore power cord into the inverter, so all AC devices will be powered, including the converter. If converter is connected, it will load the inverter trying to charge the battery. This will not work as the losses in the inverter will just pull the batteries down.

A 300 watt inverter isn't going to operate very much - a few cell phone chargers, maybe a computer, possibly a TV by its self. It won't operate a microwave (they generally need 1200 to 1500 watts), and definitely not the converter. And, unless it is a true sine wave inverter (vs. modified sine wave inverter) it could cause problems with some electronics.

Shut off the breaker to the converter before turning on the inverter, that should be sufficient.

Rick
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Old 07-06-2014, 10:50 PM   #13
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Originally Posted by RJHuser View Post
Per the OP last post, he is going to plug his shore power cord into the inverter, so all AC devices will be powered, including the converter. If converter is connected, it will load the inverter trying to charge the battery. This will not work as the losses in the inverter will just pull the batteries down.

Rick
Yep... absolutely right and not a good plan with a 300w inverter. Coffee pots & hairdryers & microwaves etc. ...less than 25 amps @12V capable,
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Old 07-06-2014, 10:58 PM   #14
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i installed a 400w inverter and wired it straight to my two 12v batteries.
use it for the same thing, tv/dvd/charging electronic devices.

i've NEVER turned off my converter because it only works on shore power.
no need to turn it off when i'm dry camping, which is why i need an inverter.
Right. As long as the converter is not wired to run off of the inverter. If someone wasn't watching how it was installed, that could happen.
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Old 07-06-2014, 11:03 PM   #15
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Sorry guys, my bad. It is a 600watt inverter. You are right.... Not enough for microwave. It is a true sine wave so should be okay for TV and chargers. I think turning of Master breaker will turn off converter but AC outlets will still have power. Any comments are welcomed.
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Old 07-06-2014, 11:15 PM   #16
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If you plan on plugging in your master power cable to the inverter then shutting off the coach master AC breaker will stop that from working just as if you plugged it into a power pedestal and then turned off the breaker.
I'd focus on the breaker or the fuse for the CONVERTER only.

600 watts is a helluva lot better than 300...but still won't work a lot of the real power hogs...like the micro, Mr. Coffee or hair dryer, ...pretty much anything with a motor or heating element ought to be spec'd out before trying. It will certainly do your TV and laptop etc. with no problem.
Suggest adding a Victron or Trimetric battery monitor so you can tell what amps are going out...how long you have left at current usage and what % state of charge the batteries are actually at...so you don't kill them prematurely.
Good luck!
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Old 07-06-2014, 11:35 PM   #17
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Thanks Camaraderie for your input. I looked at the breaker panel and did not see a breaker specifically for converter. No fuse labeled for converter. Find it hard to believe I have to take panel cover off to get to converter to disable. I am not a technician and have little knowledge about electrical systems. Trying to figure out this before unit goes into dealership so I can install a separate switch/breaker to easily turn off converter when inverter is in use while dry docking, thus solving battery drain problem.
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Old 07-07-2014, 12:22 AM   #18
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It might be possible to get the same result by turning off a battery disconnect switch if one is present. That should prevent the converter from trying to charge the batteries. I may be wrong with that though if the batteries are wired directly to the charging system, but I don't know why they would be.
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Old 07-07-2014, 12:32 AM   #19
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Assuming that the picture BikenDan posted above is close to looking like what YOU have, then the bad news is that your converter is wired into your master switch breaker and so you will need the dealer to install a separate switch in line to turn the converter off. There are 3 wires....white, green and black as you look at your converter from the back side. These are the AC wires that run from your converter unit on the bottom, to the AC power grid on the top. (Just FYI, the two wires on the other side are the ones that go to charge your batteries. )
The black one is the one that runs to the main AC breaker...white goes to the neutral terminal strip up top and green goes to the ground strip on the left as you look at it from the rear. Dealer should be able to rig an AC breaker /switch that can handle 30 amps of current and allow you to run the main power while turning off the converter.
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Old 07-07-2014, 12:51 AM   #20
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Thanks again Camaraderie!
I think you are very close to describing the solution. I'll know more when I talk with dealer on Tuesday. Not happy there isn't an easy way to isolate and disable converter. So looks like I will have to create a solution. That will cost me for sure. Wish Forest River put separate breaker in control panel for converter in this product line. Maybe they do in more expensive line. Would make things much simpler for those wanting to boondock or overnight dry dock.
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