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Old 06-25-2018, 03:50 AM   #1
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Brand: Thor Motor Coach
State: Florida
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Electrical receptical problem...

I have a Mandalay coach that has an issue I cannot figure out. When on shore power all electrical plugs (120v) work great. When I am on generator everything works great. When I am on inverter power some of the plugs in the living room on one side does not work. Is this normal or is there a problem. It is not GFCI related or anything like that..I just am wondering if it is wired like this for some reason or what kind of problem could I have.
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Old 06-25-2018, 04:24 AM   #2
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Model: ACE 29.4
State: Mississippi
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I can't speak specifically to your coach, but in my ACE the inverter only powers select outlets. It powers both tv outlets as well as two other outlets. I think yours is most likely working as designed.
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Old 06-25-2018, 12:06 PM   #3
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Ditto....the inverter isn't strong enough to power the entire coach. limited outlets. It's working as designed.
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Old 06-26-2018, 12:13 AM   #4
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thanks guys
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Old 06-26-2018, 01:09 AM   #5
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Model: Ace
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Originally Posted by tanman32225 View Post
thanks guys


On my ace the tv in living room / outlet on passenger side / outside fridg is on inverter I took a tester and turned inverter on and tested all outlets with a tester all rv are different
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Old 07-09-2018, 09:37 PM   #6
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Brand: Thor Motor Coach
Model: 2017 Axis 25.4
State: Arkansas
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I am having a similar problem on my Axis. I hooked up an inverter 6 weeks ago and all but one outlet works. I know they are all on the same circuit (All non-GFI) because when on shore or Genny power they all work fine and when I flip the break all of them are dead. But when on inverter just the one outlet in the slide donít work? Any ideas?
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Old 07-10-2018, 01:12 AM   #7
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Brand: Thor Motor Coach
Model: Palazzo 33.3 34'bunkhouse
State: North Carolina
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I can only assume that you might be a newer coach owner, as these electrical things can be quite confusing at first.

With a Mandalay, I presume maybe 2012 or older, it's likely that while it may have a residential fridge, and even a 'larger' Inverter, the old wiring 'code' within the RV manufacturer's world may have yet caught up to how it was wired 'back then'.

In the 'old' days, I guess the manufacturers thought that we 'RVrs' didn't know enough about electricity, but to be dangerous. So, I'm thinking that while the Inverters used might have been large enough, they didn't wire them but to a few 'select' outlets in the RV.
Mostly, it would certainly be for the residential fridge, and sometimes even to a microwave and several outlets, maybe for TVs.
Now a days, though, we are seeing more and more factories decide to just make ALL the RV outlets 'LIVE' thru the Inverter. Why NOT, I say... and THANKS to them for doing that. It makes no real sense not to. We can use everything just as we do on shore power.
Inverters now are smart, too. They can cut themselves off if they are pulling down the house batteries too far, turn on the Generator automatically to recharge the house batteries, and many other things to give us comfort, and also protection.

My coach has EVERY outlet live thru the Inverter, thru the subpanel of 4 separate 15amp breakers.
If I want, I can have the fridge on, run the microwave, watch TV and satellite receivers, charge the iPhone, and have my desktop computer ready at any time.
Even when I plug into shore power or crank the generator, nothing is different, other than the power source.
When the generator turns off, or I unplug from shore power, the Inverter immediately takes over and continues if nothing had changed - NICE!
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