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08-31-2022, 05:24 AM
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#21
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,155
M.O.C. #25165
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Paul, not sure what year/model rig you have. My 2019 3791RD also only has one receptacle for the fridge. That receptacle is wired to the auto transfer switch mounted to the ceiling of my basement pass through. From that auto transfer switch, I have 120v feed from the distribution panel and 120v from the inverter, also mounted on the ceiling of the basement pass through. The wire from the ATS to the inverter has a normal plug on the end which is plugged into the 2000 watt inverter about 1 foot away.
When shore power is on, the ATS passes 120v to the fridge receptacle from that source. When no shore power is available, the ATS passes 120v from the inverter, assuming batteries are switched on and have enough juice. The ATS will favor shore power as its source, so when both the inverter and shore power are supplied, shore power is passed to the fridge. That way I can leave the inverter on as a backup power source when the electricity fails.
Just to note so there is no confusion, the ATS is a 120v auto transfer switch specifically for the fridge circuit, not the same as your ATS that comes with the generator prep. That ATS would need to handle 240v/50Amp.
__________________
Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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08-31-2022, 05:29 AM
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#22
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,155
M.O.C. #25165
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Sorry for the long winded post above. If you want to add additional receptacles to your inverter, you would need to remove the power source to those receptacles from the distribution panel and add a source from the ATS, or chain them from the fridge receptacle. You cannot wire them from both the ATS and the distribution panel, circuit breakers. There needs to be only one source of power to the receptacles from the ATS and the ATS will decide what feeds that circuit.
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Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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08-31-2022, 09:09 AM
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#23
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Montana Master
Join Date: Jan 2022
Location: Shingle Springs
Posts: 2,294
M.O.C. #30417
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Quote:
Originally Posted by Paul M
Thanks, but my problem is I have no receptacles on my inverter loop except the fridge, I’m trying to find out why. If there is a jumper or something missing in ac distribution so I don’t have to rewire
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You have a 2020 with an inverter. You do have inverted outlets. They should be marked with a yellow sticker. If you're not on shore power and dont have the generator running you should have power to them. If not check the inverter battery shut off switch and make sure it's on and find your GFI and make sure it's not tripped.
__________________
Tony & Donna
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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08-31-2022, 09:36 AM
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#24
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Site Team
Join Date: Sep 2017
Location: Oro Valley
Posts: 3,960
M.O.C. #20477
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Paul,
Have you checked with the dealer where you bought your rig? Maybe it is an early 20 without the powered outlets.
__________________
Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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08-31-2022, 09:53 AM
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#25
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 5,159
M.O.C. #1920
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I have re-read this a couple of times and I am confused. First, I see people mentioning a 2020 but didn’t see where Paul said it was a 2020. I see “I am putting 400 watts of Solar” and “I have 400 watts of solar”. I also see that there are not wires going from the inverter to the bus. All of the factory installed inverted outlets (except fridge only) run through the distribution panel via a transfer switch. That is usually a combo charger/inverter/transfer switch like the Magnum. My guess is Paul’s trailer (as mentioned by Zack) does not have inverted outlets. I would also recommend that Paul add his equipment details to his signature to better assist with getting the correct information. Montana vs High Country, Legacy vs Non-Legacy, solar information, year and generator info all impact equipment, wiring, brands and recommendations. JMHO
__________________
Ron and Terrie Ames - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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08-31-2022, 10:11 AM
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#26
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Montana Master
Join Date: Oct 2019
Location: Jacksonville
Posts: 2,155
M.O.C. #25165
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Quote:
Originally Posted by rames14
I have re-read this a couple of times and I am confused. First, I see people mentioning a 2020 but didn’t see where Paul said it was a 2020. I see “I am putting 400 watts of Solar” and “I have 400 watts of solar”. I also see that there are not wires going from the inverter to the bus. All of the factory installed inverted outlets (except fridge only) run through the distribution panel via a transfer switch. That is usually a combo charger/inverter/transfer switch like the Magnum. My guess is Paul’s trailer (as mentioned by Zack) does not have inverted outlets. I would also recommend that Paul add his equipment details to his signature to better assist with getting the correct information. Montana vs High Country, Legacy vs Non-Legacy, solar information, year and generator info all impact equipment, wiring, brands and recommendations. JMHO
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Spot on. That was my guess too.
__________________
Robert & Diana McNeal
2019 Montana Legacy 3791RD 20th Anniversary Edition
2014 F350 4x4 6.7L SRW
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08-31-2022, 10:27 AM
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#27
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Montana Master
Join Date: Jan 2018
Location: Austin
Posts: 2,450
M.O.C. #21044
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Just to clarify the year and model...from PaulM's profile...
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MikenDebbie Aggie ‘77 in the sticks near Austin TX
2019 Chevy 3500 High Country DRW
2018 Montana 3921FB
Aussie Gus + Texas Heeler Jimmy
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08-31-2022, 11:49 AM
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#28
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Montana Master
Join Date: Jan 2022
Location: Shingle Springs
Posts: 2,294
M.O.C. #30417
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I was looking at some videos of the 2020 and it appears that the inverter is just for the fridge. Learn something new everyday...
__________________
Tony & Donna
2022 Montana HC, 295RL, Solar Flex 400, Onan 3600 LPG, 2K inverter, 200AH Lithium. 2020 GMC Denali 2500 6.6 Duramax, Demco 21K Auto Slide
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08-31-2022, 12:28 PM
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#29
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Established Member
Join Date: Aug 2022
Location: Nashville
Posts: 30
M.O.C. #31545
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7 outlets
Thanks for all the info. I have a 2020 3121R. Everything works as supposed to. I have a 1k inverter with separate auto transfer switch going to my fridge outlet only. That is the only outlet on the inverter loop. What I was wanting to get the others working before replacing my inverter to a 2k if possible. Montana says my trailer should have came with a 2k inverter,but didn’t. I was hoping someone else had similar issues and found a solution without going thru the trouble of retiring.
Thanks for all the input ,maybe my thread title wasn’t the correct wording
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09-05-2022, 09:40 AM
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#30
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New Member
Join Date: Jan 2019
Location: Fairless Hills
Posts: 2
M.O.C. #23254
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We have a 2019 3120 with 2000 waat inverter and the other receptacle that works off the inverter in our rig is the one that is on the wall left of the bedroom dresser .Good luck!
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10-15-2022, 09:33 AM
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#31
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New Member
Join Date: Oct 2022
Location: Great Falls
Posts: 9
M.O.C. #31820
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Hi Paul,
The 1k inverters are dedicated to the fridge circuit only. You can do what you want, but your gonna need to trace wires behind the basement wall and create the inverter loop yourself.
I pulled my 2k inverter kit (inverter, control, xfer box, fuse, rotary disconnect, 1/0 leads) from my unit. It is available if you are interested.
Check in your passthrough for a black plastic box cover, maybe backwall middle, marked "AC Inverter Prep". I can sketch out how they did it if you want to roll your sleeves up.
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10-15-2022, 09:52 AM
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#32
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Montana Master
Join Date: Dec 2021
Location: Northeast TX
Posts: 955
M.O.C. #30262
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Quote:
Originally Posted by ScottM
Hi Paul,
The 1k inverters are dedicated to the fridge circuit only. You can do what you want, but your gonna need to trace wires behind the basement wall and create the inverter loop yourself.
I pulled my 2k inverter kit (inverter, control, xfer box, fuse, rotary disconnect, 1/0 leads) from my unit. It is available if you are interested.
Check in your passthrough for a black plastic box cover, maybe backwall middle, marked "AC Inverter Prep". I can sketch out how they did it if you want to roll your sleeves up.
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Scott - looks like this was your first post. Welcome aboard the MOC family!
__________________
Lee, Edith, Lil' Bit & Cuddles
22 MHC 331RL, Surge Guard 35550, SumoSprings, Kodiak disc brakes, 412Ah Lithium, Gen 3 Goosebox, Sailun 85s
22 Ram 3500 CC DRW 6.7 CTD Herrin Hauler Classic Bed, 45 gal AUX tank
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