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Old 05-26-2016, 09:42 PM   #61
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For all of you who want to force the flow over the top of the panel, REMEMBER that is how an airplane wing works to create lift. Maybe an obstruction to keep the branches from hooking under the panels or maybe a wedge shaped leading edge for the panels to reduce wind resistance but probably ought to think twice about the aerodynamic effect of directing the flow over the top only. Think bernoulli's principle before you do something that defeats your intention and SUCKS the panels off the roof.
Thanks. Thought about that and now will definitely NOT put any air deflector device in front of the panels.
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Old 05-26-2016, 11:31 PM   #62
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Yes, thanks for the information about the air dam.
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Old 05-27-2016, 12:27 AM   #63
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Thanks. Thought about that and now will definitely NOT put any air deflector device in front of the panels.
LOL I'm sure that you will do a great job. Heck I threw my first set of panels up there so randomly and hit the four feet with big old SS sheet metal screws and slopped dicor on their feet and THEY NEVER CAME OFF So with the planning and forethought that you put in to it yours will be great.
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Old 05-27-2016, 03:58 PM   #64
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Just finished my 200w system yesterday
From AMAZON

2- 100w RENOGY panels
HQST 20a controller
MT5 remote meter

PV 17v@10a / 14.6v@ 12A to battery

roof pic's were taken before I tested system and had not secured the roof cables just in case.

I will be adding one more panel next month .

I used 6 Renogy pannel mounts with 2 screws each panel for extra security.
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Old 05-27-2016, 04:32 PM   #65
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Quote:
Originally Posted by shooter2 View Post
Just finished my 200w system yesterday
From AMAZON

2- 100w RENOGY panels
HQST 20a controller
MT5 remote meter

PV 17v@10a / 14.6v@ 12A to battery

roof pic's were taken before I tested system and had not secured the roof cables just in case.

I will be adding one more panel next month .

I used 6 Renogy pannel mounts with 2 screws each panel for extra security.
Looks good.
Did you use any adhesive or VHB tape or just screws? Is that Dicor on top or adhesive?
The picture shows a shadow on the panel on the right. If so, that will dramatically effect the output with the shadow on it.
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Old 05-27-2016, 11:45 PM   #66
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I used butyl rubber tape under mounts and dicore to make sure. Where ever you locate the panels they will have some shade in morning or afternoon from something, determined by rig orientation. Max panel output is during mid-day when sun is directly overhead and decreases as the suns angle increases.
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Old 05-28-2016, 05:10 PM   #67
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Panel dimensions

Went on the roof and took measurements. I would like to get 200-300 watts total for now. The Renogy 100w are 47x21 and would fit. But 3 panels and lots of Sticky feet. Seems like the better option would be 2 Renogy 150w on sale this weekend for $205 39".5x29" could fit in 2 configurations. Any difference is rectangle vs square panels. I see that most of you with rectangle panels are using 6 mounts. With the square ones I would be more comfortable with 8 sticky feet. Wow, 16 times $12 is $192 for the mounts. Is that overkill?
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Old 05-28-2016, 05:24 PM   #68
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Went on the roof and took measurements. I would like to get 200-300 watts total for now. The Renogy 100w are 47x21 and would fit. But 3 panels and lots of Sticky feet. Seems like the better option would be 2 Renogy 150w on sale this weekend for $205 39".5x29" could fit in 2 configurations. Any difference is rectangle vs square panels. I see that most of you with rectangle panels are using 6 mounts. With the square ones I would be more comfortable with 8 sticky feet. Wow, 16 times $12 is $192 for the mounts. Is that overkill?
From what I understand anything about 4' in length or more they recommend a mount in the middle of the long ends for support. The 47" on the 100w is borderline. Why not go with 2, 160 or 165w panels (60X29). I got 2 165w panels for $350 total including shipping. Shop around. On the square 150w panels you should be ok with 4 mounts on each. That would be 8 total not 16. Not sure how you figured on 16 mounts for those.
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Old 05-28-2016, 05:31 PM   #69
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4 on the corners and 4 in the middle of each side. Your 160's are too large for my roof. They will get too close to the A/C, maybe not??
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Old 05-28-2016, 05:54 PM   #70
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I would rather over engineer mounts than have a catastrophic failure.

JMHO
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