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11-23-2015, 07:37 PM
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#1
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Junior Member
Join Date: Sep 2012
Posts: 20
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Solar setup observations
Have been doing a lot of research in preparation for installing solar. The main thing that I have learned is there is a lot to learn if you want to do this right the first time. I am at the point now of having a basic plan of the setup I want to install. Before buying any of this I would like to ask for any input from those of you that have been through a solar install. I will greatly appreciate your observations.
The solar will be installed on a 40ft fifth wheel. Space on the roof is not an issue. The fiver has a residential refrigerator with an inverter already installed. I also recently install a Timetric TM-2030A battery monitor.
My main reason for installing solar is maintaining the battery bank for the refrigerator. So many of the state and national parks have such goofy generator use hours. I want to be able to be gone all day and even overnight and not have to adjust my activities just to run a generator. Also to be able to watch TV after generator hours and to run a fan on the warm nights.
I'm sure one question some will have is power consumption of the refrigerator. I used a Kill O Watt meter for 5 days, 120 hrs exactly. IT used 5.23kwh which works out to just over 1kwh or 87amh per day.
Here is the setup:
3-265 watt Kyocera panels wired in parallel for a total of 795 watts.
10 awg wire from panels to combiner box with a 15A breaker for ea panel.
#6 wire from combiner box to a controller.
Morningstar Tristar MPPT 60 controller w/remote inside the fiver.
#4 from controller to batteries.
40A and 63A circuit breaker before and after controller.
Replacing current 4 Sams 6V with 6 Tojan T145 series/parallel 780 AH.
Comments are welcome
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11-23-2015, 08:00 PM
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#2
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 15,749
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Do you have the physical room for additional solar panels? If so, have you designed in expansion capacity to support additional panels in the future? Just a consideration.
Are the panels mounted flat or tilt-able? If flat this provides some additional headroom.
__________________
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
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11-23-2015, 08:18 PM
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#3
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Senior Member
Join Date: Jul 2014
Posts: 35,420
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I have 3, 235 watt panels in series with 12 gauge to the same controller, 4, maybe 2 gauge out to 8 Sam's 6 volts. I use a 2000 watt, sine wave inverter.
This is my 6 th year with this setup, spending 6 + months on board. I RV in summer, cruise the Keys on my boat for the winter.
I have a residential refrigerator, Sat TV, Mr. coffee, small microwave, 2 computers, phones and other chargers, a few fans and lights.
I could get away with 6 batteries but the sun is lower in the winter, even down here.
I think you have a good system layed out and it will work great.
Here is a tip. When measuring the daily AH of the fridge, don't count the 5 or 6 hours that the sun is covering the load. Any time the batteries are charging and the fridge is running, there is no amps drawn from the bank.
Even on cloudy days there is some output, covering some or all of the load.
Tip # 2 be sure your inverter has a "low" no load amp draw. I had one that drew 4 amps at idle. That's 96 AH a day, doing nothing. It was my biggest energy user. More then my fridge.
My Xantrex draws 1/2 an amp at idle. 12 AH a day.
Good luck
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11-23-2015, 10:32 PM
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#4
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Junior Member
Join Date: Sep 2012
Posts: 20
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Quote:
Originally Posted by vsheetz
Do you have the physical room for additional solar panels? If so, have you designed in expansion capacity to support additional panels in the future? Just a consideration.
Are the panels mounted flat or tilt-able? If flat this provides some additional headroom.
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There is room for additional panels. I plan on waiting until I used this setup for awhile to see how it works to determine how much more I would need. If more is needed I would go with a second controller rather than a bigger one now.
Planning on mounting flat but that could change.
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11-23-2015, 10:44 PM
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#5
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Junior Member
Join Date: Sep 2012
Posts: 20
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Quote:
Originally Posted by twinboat
I have 3, 235 watt panels in series with 12 gauge to the same controller, 4, maybe 2 gauge out to 8 Sam's 6 volts. I use a 2000 watt, sine wave inverter.
This is my 6 th year with this setup, spending 6 + months on board. I RV in summer, cruise the Keys on my boat for the winter.
I have a residential refrigerator, Sat TV, Mr. coffee, small microwave, 2 computers, phones and other chargers, a few fans and lights.
I could get away with 6 batteries but the sun is lower in the winter, even down here.
I think you have a good system layed out and it will work great.
Here is a tip. When measuring the daily AH of the fridge, don't count the 5 or 6 hours that the sun is covering the load. Any time the batteries are charging and the fridge is running, there is no amps drawn from the bank.
Even on cloudy days there is some output, covering some or all of the load.
Tip # 2 be sure your inverter has a "low" no load amp draw. I had one that drew 4 amps at idle. That's 96 AH a day, doing nothing. It was my biggest energy user. More then my fridge.
My Xantrex draws 1/2 an amp at idle. 12 AH a day.
Good luck
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This was good to hear. Makes me think I am on the right track. I'll be in Key West again next winter. I stay by the Coast Guard station. No hookups for 4 months. Solar will make that easier. Maybe I see ya sailing by.
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11-24-2015, 02:25 PM
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#6
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Member
Join Date: Nov 2014
Location: Clearwater, FL
Posts: 40
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Sounds like a good setup. The only suggestion I would make is run 1/0 AWG wire between the SOLAR Charge controller and the batteries and batteries to the frame. This will allow for additional future loads.
Good luck!!
Don
__________________
2013 Jayco Eagle 284BHS,2012 Ford F150XLT, EcoBoost w/3.73, 250Watt Grape Solar Panel, MorningStar MPPT 60 Charge Controller, Trojan T145 Batteries (260Ah), 1500 Watt Ramsond PSI, EnGenius WI-FI extender
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11-24-2015, 08:26 PM
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#7
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Senior Member
Workhorse Chassis Owner
Join Date: May 2009
Location: Kansas City, MO./Pollock, LA.
Posts: 1,556
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If you have the room, go ahead and install the 4th panel now.
__________________
06 Hurricane 34FT WH W20 Chassis 8.1L 132K, Steersafe, Koni Shocks, DIY Trac Bar, Tri-Metric 2025RV Battery Monitor, 4-6V Batteries, Scan Gauge 2, Crossfires, 735W Solar Morningstar MPPT-60, WG T4 In-Motion Sat, XM Radio, 07 Chevy Malibu Maxx Toad, Falcon 2, Brake Buddy, Escapee
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11-25-2015, 03:33 AM
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#8
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Senior Member
Join Date: Oct 2015
Posts: 269
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Don't forget to keep all of the receipts and get the 30% Federal Tax credit! ;-)
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11-30-2015, 01:44 PM
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#9
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Senior Member
Country Coach Owners Club
Join Date: Mar 2014
Posts: 100
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The fed rebate is through 2016 isn't it?
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11-30-2015, 10:09 PM
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#10
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Senior Member
Join Date: Oct 2015
Posts: 269
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