Boon Docker
Mountain Foothills of Southern Alberta
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Joined: 10/30/2015
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2oldman wrote:Grit dog wrote:This is becoming laughable. Talking 2/0 and 4/0 cables. Lol. U think he’s using the batteries to start his diesel truck 20 ft away or what? I don't know why you're hurling insults. He's loading up on a lot of power. Have you never read the manuals for large inverters and see what cables they recommend?
Typical response. ![[emoticon]](https://forums.motorhome.com/sharedcontent/cfb/images/rolleyes.gif "rolleyes")
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Cptnvideo
Arizona - most of the time
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Joined: 11/05/2006
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See our signature.
Ours is a 12 volt system. Simple. And no issues in a 50 amp RV with a residential fridge. One of my 3 A/Cs has soft start, but I have no issues starting the non soft start A/Cs.
Yes, higher voltage, smaller wire gauge. And for the roof solar to compartment controller, that is a big deal. But my controller, batteries and inverter are all next to one another so large wire is no big deal.
Bill & Linda
Arizona
2019 Dodge Ram Laramie 3500 dually 4x4 diesel
Hensley Trailer Saver BD5 hitch
2022 Grand Design Solitude 378MBS
1600 watts solar, Victron 150/100 MPPT controller, GoPower 3kw inverter/charger, 5 SOK 206AH LiFePo4 batteries for 1030 ah
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TurnThePage
North ID
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Joined: 10/08/2003
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The wide variety of responses has been so much better than I anticipated!
The longest wire run should be from the pvs to charge controller(s). I still don't know how I'm going to accomplish that part. I'm hoping to keep all other components within just a few feet of each other. I'm leaning toward sticking with 12v just for simplicity, but will still weigh my options as I acquire stuff.
2015 Ram 1500
2004 Pioneer 18T6
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pianotuna
Regina, SK, Canada
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Joined: 12/18/2004
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TurnThepage,
Look at battery power tools. No one uses 12 volts anymore.
Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.
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Cptnvideo
Arizona - most of the time
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Joined: 11/05/2006
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True, Don. But all DC components in a RV are 12 VDC to start with.
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Veebyes
Bermuda & Maryland Eastern Shore
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Joined: 11/24/2003
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Sooner or later you will want to sell that RV. Who is going to want what you have done to it by changing the basic DC voltage system?
Boat: 32' 1996 Albin 32+2, single Cummins 315hp
40+ night per year overnighter
2007 Alpenlite 34RLR
2006 Chevy 3500 LT, CC,LB 6.6L Diesel
Ham Radio: VP9KL, IRLP node 7995
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CA Traveler
The Western States
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Joined: 01/03/2004
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TurnThePage wrote:The wide variety of responses has been so much better than I anticipated!
The longest wire run should be from the pvs to charge controller(s). I still don't know how I'm going to accomplish that part. I'm hoping to keep all other components within just a few feet of each other. I'm leaning toward sticking with 12v just for simplicity, but will still weigh my options as I acquire stuff. I wired 3 panels in serial with the standard 10ga wire. 62' of wire 0.6% wiring loss. About 100Vmp, Consider a serial/parallel connection and be sure your controller can handle the panel Voc.
2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland
Bob
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Grit dog
Black Diamond, WA
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Joined: 05/06/2013
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pianotuna wrote:Far better off to use 48 volts for storage.
Another Derp comment….how much do 12v LiFePO4 lose over time?
Yup, not enuff to matter. And ZERO with 1500w solar loading up the whole roof!
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold
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Grit dog
Black Diamond, WA
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Joined: 05/06/2013
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Veebyes wrote:Sooner or later you will want to sell that RV. Who is going to want what you have done to it by changing the basic DC voltage system?
No one will…..unless 2oldman or tuna buys it!
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Grit dog
Black Diamond, WA
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pianotuna wrote:TurnThepage,
Look at battery power tools. No one uses 12 volts anymore.
Derp….again!
How do you spend so much time geeking out over this stuff and make a comment like that?
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