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11-25-2019, 08:42 PM
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#1
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Established Member
Join Date: Nov 2019
Location: McDonough
Posts: 38
M.O.C. #25338
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1200 Watts of solar and 600 AH of Battle Born
Well here we go. Just ordered the batteries today and the solar panels arrived yesterday. My system will use the Victron 3000k inverter charger and the victron 100 amp charge controller for the panels. Replacing the #10 cable from the roof to the basement with two sets of #2 welding cable. Looks like the 6 batteries will fit in the current battery locker with only an additional 40 lbs compared to the two lead acid installed now. Worry a little about the cold weather and the battery location so I ordered the electric blankets for the batteries. Never know how far north we will get on our adventure.
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11-25-2019, 11:28 PM
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#2
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Site Team
Join Date: Sep 2017
Location: Oro Valley
Posts: 3,923
M.O.C. #20477
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Welcome to the forum!
Post some pics and let us know how it works when you get it all installed. Sounds like a nice setup.
__________________
Zack and Donna plus Millie and Ranger
2018 3160RL
"Life is too short to stay indoors, enjoy the ride!"
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11-26-2019, 03:04 AM
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#3
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Montana Master
Join Date: Nov 2005
Location: Paola
Posts: 5,739
M.O.C. #4961
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Welcome to the forum.
__________________
Dennis & Linda Ward
Paola, Kansas
Montana 3735MK Legacy Edition
1200 watts of Solar
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11-26-2019, 05:53 AM
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#4
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Montana Master
Join Date: Oct 2017
Location: Bastrop
Posts: 2,892
M.O.C. #20753
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Welcome to the Forum. Without pix it did not happen
__________________
Mocha, one-eyed toothless, hurricane survivor, Pirate dog
2019 20th Anniversary Edition 3701LK
B&W 20K for Ford OEM Puck
2018 Ford F-350 Lariat CCLB PSD DRW KJ5CQH
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11-26-2019, 06:21 AM
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#5
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Established Member
Join Date: Nov 2019
Location: Richland
Posts: 13
M.O.C. #25383
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Very nice. Where did you purchase the heating blankets?
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11-26-2019, 07:57 AM
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#6
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Established Member
Join Date: Nov 2019
Location: McDonough
Posts: 38
M.O.C. #25338
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Battle born sells them as well. They are designed for their battery so they should keep the batteries chargeable in cold weather.
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11-26-2019, 08:58 AM
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#7
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Montana Master
Join Date: Mar 2012
Location: Livingston
Posts: 1,150
M.O.C. #12333
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Looking forward to seeing more about your install. Good luck. I love the Victron line and how it integrates with itself.
Welcome to unlimited freedom from the grid!
__________________
Les and Sue Young, 2009 Int 4400 LP, 2020 DRV Mobile Suites [/url] https://ramblingrvrat.blogspot.com/2019/11/freedom-from-grid-rambling-rv-rats.html[/url]
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11-26-2019, 10:35 AM
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#8
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Established Member
Join Date: Nov 2019
Location: McDonough
Posts: 38
M.O.C. #25338
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We will be full timing in Jan and the solar will help keep us comfortable. Have a soft start on the way as well. May try to use the a/c in the Captains cabin.
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11-26-2019, 03:57 PM
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#9
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Established Member
Join Date: Nov 2019
Location: Richland
Posts: 13
M.O.C. #25383
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Perfect. I plan to get one for a/c with heat pump. If that works well I’ll get a second one for the bedroom air
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11-27-2019, 08:15 AM
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#10
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Montana Fan
Join Date: Nov 2010
Location: Chatsworth
Posts: 468
M.O.C. #10933
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Check the wire requirement from panels to solar controller. #2 sounds too heavy. Wouldn't # 4 do the job just as well? I'm not an expert but have been using solar for 3 yrs. now and know that overkill can be a problem too. Anyway, enjoy your setup and welcome to the moc.
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11-27-2019, 09:25 AM
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#11
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Montana Master
Join Date: Nov 2015
Location: Arlington
Posts: 1,522
M.O.C. #18081
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In this scenario the only downside to over sizing the wire between the panel combiner box and the charge controller is cost. The larger the wire the less the voltage drop all things equal. I would however suggest verifying your charge controller terminals are rated and sized for #2 wire. I have a pretty robust charger and my terminals are rated for #4 AWG max.
__________________
SOB
2015 Volvo VNL780 D13, iShift, 32k ET air hitch, Idle Free LiFePO4 APU
16.8KWhr LiFePO4, 2.52 kw solar, 10kva Victron split phase
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11-27-2019, 10:30 AM
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#12
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Montana Master
Join Date: Aug 2018
Location: Minden - NV
Posts: 501
M.O.C. #22360
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10awg would work from the panels to the controller if you run half the panels in series and tie them in parallel at the combiner. If you're doing a full parallel system, you will need the larger size. 2 or 4 awg from the controller to the batteries is optimal for the 100a controller output at 13-14 volts
My 855w array operates at around 50-55v at 17 amps in peak conditions feeding the controller. Well within the permitted current limit of 10awg wire (30amps).
__________________
2013 F350 Lariat Ultimate CC LB
2019 3790RD
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11-27-2019, 11:33 AM
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#13
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Established Member
Join Date: Nov 2019
Location: McDonough
Posts: 38
M.O.C. #25338
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Thanks for the heads up. My charge controller is a Victron smart solar charger mppt 150/100. The Pv connections are 35 mm and I think that is #2. My run from the combiner box to the charge controller is 25 feet. I think 1 set of #2 would work but I had the shop run two sets.
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11-27-2019, 11:39 AM
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#14
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Montana Master
Join Date: Aug 2018
Location: Minden - NV
Posts: 501
M.O.C. #22360
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I have the 150/85
__________________
2013 F350 Lariat Ultimate CC LB
2019 3790RD
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11-27-2019, 12:32 PM
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#15
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Established Member
Join Date: Nov 2019
Location: McDonough
Posts: 38
M.O.C. #25338
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Just received my DC distribution. This is set up for 8 batteries but I will only use 6. Quality equipment from Victron. I'm pleased so far.
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11-27-2019, 03:22 PM
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#16
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Montana Master
Join Date: Nov 2015
Location: Arlington
Posts: 1,522
M.O.C. #18081
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Quote:
Originally Posted by jetskier
10awg would work from the panels to the controller if you run half the panels in series and tie them in parallel at the combiner. If you're doing a full parallel system, you will need the larger size. 2 or 4 awg from the controller to the batteries is optimal for the 100a controller output at 13-14 volts
My 855w array operates at around 50-55v at 17 amps in peak conditions feeding the controller. Well within the permitted current limit of 10awg wire (30amps).
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While true why would one not take advantage of the larger wire size for lower voltage drop?
__________________
SOB
2015 Volvo VNL780 D13, iShift, 32k ET air hitch, Idle Free LiFePO4 APU
16.8KWhr LiFePO4, 2.52 kw solar, 10kva Victron split phase
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11-27-2019, 08:03 PM
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#17
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Montana Master
Join Date: Mar 2012
Location: Livingston
Posts: 1,150
M.O.C. #12333
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Love the Victron components.....that's all we used for our new setup.
__________________
Les and Sue Young, 2009 Int 4400 LP, 2020 DRV Mobile Suites [/url] https://ramblingrvrat.blogspot.com/2019/11/freedom-from-grid-rambling-rv-rats.html[/url]
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11-28-2019, 06:21 AM
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#18
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Montana Fan
Join Date: Nov 2010
Location: Chatsworth
Posts: 468
M.O.C. #10933
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Always keep weight in mind when adding "stuff" to the monty. Your solar system is heavy and the trailer can handle it but if you are full timing, it is at the cost of other stuff you will want to have on board. We are not full timers but long timers. Our suspension on our 2017 3720 has given us multiple headaches so we have upgraded to independent susp and disc brakes.
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11-29-2019, 10:31 AM
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#19
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Established Member
Join Date: Nov 2019
Location: McDonough
Posts: 38
M.O.C. #25338
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Good point I will keep that in mind. Just wonder how much weight this will add? Think I just might hit the scales before the install. Only thing added so far is the two sets of #2 cable at 25 feet, easy to estimate.
I have the upgraded Legacy package with the disk brakes. Made a trip to Gattlenburg and pulling up and riding down the mountains was a breeze with the engine brake and the disk on the Montana. But I'm still light compared to when we hit the road in Jan.
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12-01-2019, 01:18 PM
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#20
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Seasoned Camper
Join Date: Aug 2018
Location: Sun City
Posts: 53
M.O.C. #22428
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I have eight 175 watt panels on my Monty, using victron components. I have the residential refrigerator and I have never worried about batteries going flat. I dry Camp 90% of the time.....
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