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Old 03-31-2015, 09:56 PM   #1
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Join Date: Aug 2014
Posts: 85
Good start on solar install

Got a good start on our solar system today. Went about it a little different than most of the installs out there. Our 93' motorhome had steel members in the roof that you could find with a magnet for mounting to something substantial. Nothing worked to find the aluminum trusses on the rockwood. I even tried two stud finders with no luck. I was surprised at how thin the roof was. It was like drilling through cardboard. I used 10 expanding fasteners and self levelling caulk to hold the rack down. Still need to get the wiring to the controller which I plan to put in the front storage bay on the rockwood.

The panel is a 305 watt left over from a grid tie install we completed last year. Testing in our back yard On our mppt charge controller it put out 18 amps tilted and 10 amps flat. I will run 2 12v 100ah agm batteries c/w outback charge controller and 3000 watt xantrex inverter

More to come

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Old 03-31-2015, 10:40 PM   #2
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looks great. i run power down the refer vent to avoid more holes in roof. if i have a wall mount controller with a readout, i usually have a wall panel next to the fridge to mount it. then if i have 12 ga or better to the fridge, i just back feed dc from there.

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Old 03-31-2015, 10:52 PM   #3
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Our 93' motorhome
Man, that's a LONG motorhome!

You must have to take really wide turns!
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Old 04-01-2015, 07:02 AM   #4
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I have a question about solar. Would a 45watt supply be enough to the keep the batt charged if the only thing running is the fridge on propane and the vampire apps like co2 sensor. Starting in oct i will leave my camper onsite for 9 weekends. We will run the gen friday - sunday. i only have one 12v battery but thinking og either adding a 12v or swapping to 2 6v.
last season i just emptied out the fridge every sunday and carried everthing home. it just seemed like we would forget something and have to run to the store even making a list. it would mostly have butter and other condiments. no eggs milk and such so no real loss or smell issue if something spoiled
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Old 04-01-2015, 10:21 AM   #5
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make and model fridge please...just learned that the humidity heat element on some dometics will not turn off...otherwise the answer is yes.

edit: i may have been hasty i my response. id add up the draws and have a better idea. starting with 2 charged 6v at the beginning of the week would probably get you there. but, you are looking at late fall and the potential for less light.
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Old 04-01-2015, 03:47 PM   #6
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45watts would be around 3 3/4 amps at full sun. That's cutting it real close if not at all. If the 45 watt panel is the one from Harbor Freight you may want to look into the 100 watt panel from Home Depot for roughly the same price.

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