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    Best angle for west facing panels

    These are S-5! VERSABRACKET-47 METAL ROOF MOUNTING CLAMP and S-5! SOLARFOOT METAL ROOF MOUNTING CLAMP which are designed for sheet metal roof installs. They have a layer of "butyl co polymeric sealant" on the bottom which I'm pretty confident will be water tight. The installation screws also...
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    Best angle for west facing panels

    Finally got some good weather and put up the racking and wiring. Panels will be pushed out closer to the edge of the roof than they should be but I thought it was more important to have space to work around the panels centrally. Just waiting for my kids to help me pack the panels up to the roof...
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    Best angle for west facing panels

    Unfortunately I'm in a densely wooded area. My choice is to do nothing or take the efficiency hit. I've chosen the latter with some professional tree pruning (which brings up the ethical questions: is it OK to remove trees to improve solar efficiency to reduce reliance on coal?). I put 36 panels...
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    Best angle for west facing panels

    SAM is the System Advisor Model from NREL.GOV Looks extremely powerful but I'm not sure of all the specifications meanings so just now muddling through it. I think I have decided on 7 flat facing west and 2 angled facing south. The extra $20 in mounting hardware should pay for itself in 2...
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    Best angle for west facing panels

    Interesting playing with the numbers. With the panels at a 27 degree angle facing south I have to space them 57" apart to avoid self-shadowing at winter solstice. With that I can fit a total of 7 panels on the roof which could generate 2,747 Kwh/year per PVWatts . If I lay them all flat facing...
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    Best angle for west facing panels

    My rectangle is about 7' by 28' with the long side facing west. I will get my triangle calculator out and see how many rows I can get without one set shadowing the other at December solstice... I will post, thank you!
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    Best angle for west facing panels

    Thank you. That's a much better app than I had been using. I just had an epiphany; face them south on the roof (5 rows of 2 panels each) at 37 degrees angled toward the south; they will have a 9 degree tilt to the west but that shouldn't be a big deal. I will need to get more mounting hardware...
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    Best angle for west facing panels

    I'm installing 10 panels on a small cabin I am renovating deep in the woods. There is no open land for a ground based system so I am stuck putting the panels on the porch roof which has a 9 degree slope. It is the roof that gets the most sunlight and is facing due west. I don't plan on changing...
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