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Old 01-07-2019, 09:54 AM   #1
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Update to my 800W solar install

For starters it ended up being 900W (nine 100W panels) with 7 that tilt and 2 that are fixed...pictures in the 800 installation posts. Unfounded concerns about the tilting ones lifting up but the roof of my Navigator is unusual...sunken with raised side rails and front and rear caps higher than the roof which protects the panels from the wind. Did put small test strips of paper under the ends of the mounts that move and they were still there after a 85 mph affective wind speed.

The 9 panels were unusual too...thin film sandwiched between two plates of glass and 80V each so wired them in parallel. Fortunately Monaco prewired it for solar so once found it was easy to feed them into a Outback 60amp mppt controller mounted next to the inverter.

Today I had as good as it’s going to get sun conditions in our snowbird location...clear skies and cool temps. Without much of a load on the 12V system I was getting 32 amps at 14.2V. Shut the power off into the coach and with the inverter increasing the draw to 25 amps, the solar charging increased to 46 amps. In the afternoon I get a fair amount of shading so 46A changing will be the max I’ll get in this location.
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Old 01-07-2019, 11:28 AM   #2
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Sounds like it worked out well for you. I've been kicking around the idea of putting 800-1000 watts on mine, but I've yet to take the leap
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Old 01-07-2019, 01:12 PM   #3
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Originally Posted by RescueRamsey View Post
. I've been kicking around the idea of putting 800-1000 watts on mine, but I've yet to take the leap
Do you have a large battery bank? I was on the fence too until I found solar panels 2’ X 4’ (100W) for 55 cents/watt ...the shape was important because of the narrow, non shaded area on my roof. The raised rails along the sides of the roof mandated that I tilt them and made it fairly easy to tilt them. Bigger panels (300+\-W) are better because they are normally higher voltage and you have fewer to attach to the roof if you have the non shaded area.

My cost/watt was $1.25... $550 for 10 panels, $450 for the controller, and $150 in cables, fuses, and miscellaneous. Even at only $10/hour for my labor that would add $400...$1.72/watt. Hiring this installation done could easily double the cost.
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Old 01-10-2019, 01:45 PM   #4
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Quote:
Originally Posted by Ivylog View Post
Do you have a large battery bank? I was on the fence too until I found solar panels 2’ X 4’ (100W) for 55 cents/watt ...the shape was important because of the narrow, non shaded area on my roof. The raised rails along the sides of the roof mandated that I tilt them and made it fairly easy to tilt them. Bigger panels (300+\-W) are better because they are normally higher voltage and you have fewer to attach to the roof if you have the non shaded area.

My cost/watt was $1.25... $550 for 10 panels, $450 for the controller, and $150 in cables, fuses, and miscellaneous. Even at only $10/hour for my labor that would add $400...$1.72/watt. Hiring this installation done could easily double the cost.


Where did you get the panels for that cost? I would love the info when we add solar.
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Old 01-11-2019, 08:24 AM   #5
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Where did you get the panels for that cost? I would love the info when we add solar.
Found them on Atlanta Craigslist and the 100 he had were gone in a couple weeks. Had to go 90 miles to pickup.
Wholesale Solar has 310W panels for $209 delivered...68 cents. Do not know anything about the panels.
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Old 01-29-2019, 01:58 PM   #6
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Had 50 amps at 14.2V (710W) out of my 900W of solar today...the most I’ve seen to date with clear skies and cool temperatures. Had a little shading on one panel at noon and the angle to the sun is not at a right angle...rig is not parked E-W. Later in the day, I have a lot more shading. Overall I’m happy with the results, especially at $1.25/Watt plus my labor.
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