EddieWalker
Epic Contributor
Your shop filled up pretty quickly. Looks like it's time to build another!!! 
Marketplace. They're second hand panels 3-5 years old from a commercial installer. The stupid government tax credit is usable every 3-5 years so they do panel upgrades and claim the credit, then sell the used panels off for cheap.Where are you getting panels at that price?
I am expanding, lots of projects that are made possible by that shop. Best move I've ever made.Your shop filled up pretty quickly. Looks like it's time to build another!!!![]()
Good to know. Thanks for the info.Marketplace. They're second hand panels 3-5 years old from a commercial installer. The stupid government tax credit is usable every 3-5 years so they do panel upgrades and claim the credit, then sell the used panels off for cheap.
Panels are warrantied for 80% production after 25 years. I have some in place now and they're doing well.
That's exactly what I needed, thank you.I did a 12x24 solar panel roof a couple years ago. A nice covered area to park stuff. How are you going to address seal between panels? I just ran a bead of silicone, but have a few spots that leak. I I had it to do over, might consider using butyl tape, but there may be something else available these days. Maybe I was too concerned about thermal expansion/contraction. Otherwise very happy with it. I made my supports from 2inch 1/8 alumimum angle
View attachment 877964View attachment 877965
That helped immensely, thank you.Hope these help
View attachment 878039
My rails were matched to the PV factory holes
View attachment 878040
Conceivably, I could have considered slots in the alumimum rails. I used 1/4 SS nuts and bolts. Note my panels were a tad short of 12ft, but that was ok. A 4th row would have been overkill for me, but I did consider it.
Only bolted panels to rails, not to each other. I would use the butyl tape without extra gap. You have a more extreme condition as I only see about max daily 22° temp change (60-82)yearlong. The aluminum sealing tape you see on bottom side was an after thought, would have been more effective on top side.
View attachment 878041
View attachment 878042
View attachment 878043
View attachment 878044
View attachment 878045
Hope these help
I agree, wouldn’t go more than 6’ span with my 2” 1/8 alumimum.
I’ve done a couple of PV rackings
View attachment 878046