Some more ideas: If you want to go custom, you should be able to through-bolt to the bottom of the module frame with standard stainless hardware per the manufacturer instructions. Here is an example from SunPower's installation guide <https://us.sunpower.com/sites/sunpower/files/media-library/manuals/mn-sunpower-solar-panels-safety-installation-guide-na.pdf> :
"Frame Holes: Secure the module to the structure using the factory mounting holes. Four 1/4″ stainless steel bolts, with nuts, washers, and lock washers are recommended per module; tightened to a min. torque of 10 inlbs. Refer to Table 4 for the module dimensions and hole locations. This method has been certified by a third-party organization according to UL 1703. For frame hole mounting, modules must be secured using the holes located at 322mm from the short end of the module for 72 and 96 cell modules and 433mm from the end of the module for 128 cell modules. For carport installations the supporting structure has been pre-drilled. For 128 cell modules for carport assembly, modules must be secured using only the holes located 433mm from the ends of the module and hardware described above in Section 4.1, Item 5. See Figure 2 for carport assembly details." We typically spec out an EPDM pad or washer between the module, rail, and or sub rack system to avoid dissimilar metal corrosion unless the materials are all the same. For wire management, there are more and more clips available on the market designed to secure wiring without needing classic zip ties. Maybe your AC module manufacturer has accessories? When cable ties are needed, I always like using the Heyco Sunbundler <https://www.heyco.com/Solar_Power_Components/pdf/SunBundler-Cable-Ties.pdf> . Just some thoughts, August On Fri, Feb 8, 2019 at 6:37 AM Jason Szumlanski < ja...@floridasolardesigngroup.com> wrote: > I don't think I'm going to get the spans I need in this high wind area > with an off-the-shelf aluminum solar rail. I think the purlins will need to > be steel. I'm thinking either Z-purlins or I-beams. I have to mount the > modules in landscape. I guess what I'm really looking for is standard > hardware that I can bolt to the purlins/beams and bolt or clip to the > module frame. > > These will likely be AC modules, so I also need to consider wire > management. > > Jason > > > > > On Thu, Feb 7, 2019 at 9:54 AM August Goers <aug...@luminalt.com> wrote: > >> Hi Jason - We've used Unirac SunFrame for similar applications. I'm not >> certain that the shared rail can accommodate the slight different in angle >> between module rows due to the curve, but it might be worth checking out if >> you haven't already: >> >> https://unirac.com/sunframe/ >> >> August >> >> >> On Thu, Feb 7, 2019 at 6:06 AM Jason Szumlanski < >> ja...@floridasolardesigngroup.com> wrote: >> >>> Hi all, >>> >>> I'm looking for some ideas for attaching modules to a curved carport >>> system. I attached a concept drawing. I'm pretty dead-set on through >>> bolting to the frames, but bottom clips would probably work if using an >>> off-the-shelf rail system. Any products or picture you can supply would be >>> very helpful. >>> >>> The uprights pictured are already determined. It's a 20' radius curve. >>> I'm assuming it will be steel tube bent to that radius. The total length >>> will be much longer than what is pictured. The general contractor is >>> willing to entertain any welded or bolted solution for the structure. >>> >>> Thanks! >>> >>> Jason Szumlanski >>> Florida Solar Design Group >>> >>> >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> List Address: RE-wrenches@lists.re-wrenches.org >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> List-Archive: >>> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >>> >>> List rules & etiquette: >>> www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> www.members.re-wrenches.org >>> >>> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > >
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