We've used SolarScrim - it works fine, reasonable cost. Used it on a 100kW system and went up fast, looks neat. We used it under the array, changing from our original plan to use it as a perimeter. It is unclear whether many AHJs will find it acceptable shielding in either configuration, particularly if it is in any sort of public location.
Howie -- Howie Michaelson NABCEP Certified Solar PV Installer™ Catamount Solar, LLC Renewable Energy Systems Sales and Service VT Solar Electric & Hot Water Incentive Partner http://www.CatamountSolar.com 802-272-0004 On Wed, February 5, 2014 8:57 am, Dave Click wrote: > A colleague found this online the other day as one potential option for > shielding the wires for a ground-/pole-mount system: > http://www.solarscrim.com/index.php > > No personal experience, though. Looks like they may ship with black zip > ties but Sunbundler ties (or others) would be an easy swap. > > Didn't notice that REC residential/AEE had been sold. It looks like > SolarCity, Vivint, and Sunrun are just taking turns buying every smaller > solar company to make sure that the others don't get them. > > On 2014/2/4, 23:47, [email protected] wrote: >> >> Kelly: >> >> Ground mount racking choice is determined on a case-by-case basis. If >> the ground is flat and area plentiful, we use ballasted on gravel >> (Dyno-Raxx). If you need to seasonally adjust, we like the DPW MPM. >> If the ground is sloped other than gradually south, top of pole mounts >> may be your choice. For flat ground, low tilt (grid-tied) "fence >> post" arrays like the DPW LGM work well. For high wind areas, >> consider the DPW TTRGM on piers spanned by strut. >> >> Lest anyone think I am the cheering section for DPW, I suggest you >> avoid the DPW P6 or P8 "Tilt Kit" assemblies. The brackets are >> flimsy. Also, avoid DPW's L-feet. They are bent aluminum and come >> pre-stress cracked at no extra cost. For L-feet, use Unirac "Serrated >> L-feet." >> >> It is refreshing to hear someone ask about wire management upfront. >> All too often this is an afterthought. In the industry vacuum we have >> been developing wire management systems on an ongoing basis. Below is >> a link that depicts some of our ideas. >> >> http://www.millersolar.com/public_html/MillerSolar/practices/PV_wiring/_PV_Wiring2.html >> >> The Code now requires wire shielding on "readily accessible" PV which >> means ground mount. Just managing the wire is not enough, you must >> shield it from touch. One option is to enclose the PV in chain link, >> which ramps up the ugly factor (I don't think three rail pasture fence >> or even barbed wire complies). Once you fence the array you can >> dispense with shielding, but you still don't want the leads dangling >> in a year or two, so avoid any flavor of plastic wire ties. There have >> been studies proving they don't last (US Navy is one source). >> >> We have looked at racking members with larger interior cross section >> (i.e. Pro-Solar) with the intent of running AC and DC leads inside and >> we have even mocked up a few, but fitting leads and the proprietary >> nuts into the same channel has proven impractical. >> >> Good luck. >> >> William Miller >> >> PS: Speaking of racking systems, did anyone get the news that >> SnapNRack and indeed the entire REC Residential juggernaut has been >> sold? Read the rest of this story >> <http://r20.rs6.net/tn.jsp?f=001DOU7toids4P6EbtZ8amZnWIPqfwSVSQprZxgWcCDNMwVujGRFeNr6kDDQxv8reDLHOjQsU5ZAbim7nwyi2LH1WCwpxjpydyrqtwAXR7rGEE1Vv9y6CHdApOn8xu7viO-boKxfR0vxuRWZuQZUsi31k7EuNfvsnYtZxiDLh9hiU2snspkUXkwVWlu0bEQXhPr6iN048ijV9vyy42Nc0lSkRY8eR4Vuhj1x9WG_J42Nw3BUMy2LRo8bPk83rGlFxOIi3a3_xZ86ubEYbyk1MwQDdKVfXOrZiplaNIIzrDh6n_xz1PO28GP4feFeQCk2gd8l_yy_pAgMdOHcKD_IDW7y6eRVPj8LA5FS7-3nIgC4egIz2vMLcdeRCtjg_WNZoRohptTtbcFtULUCOupqpn91wIENm--baFFvHj0TycL7wMKVBZI340LaA==&c=-PYi8jywk0XKsL2vpOkRGCzs2UwO52AqIXjyxYLdwi6HgzYpVBBpKQ==&ch=UHlwvhDu_eij1qcoWtW5qiGLvNITtkXGLCqG4RSjo4k9OQWUYTpu8w==> >> >> Wm >> >> >> On Feb 4, 2014, at 4:45 PM, Kelly Larson <[email protected] >> <mailto:[email protected]>> wrote: >> >> Thanks, Aaron. How are you handling wire management and >> connection to the ground? >> >> >> Blessings, >> >> Kelly >> >> On Feb 4, 2014, at 2:41 PM, Aaron Mandelkorn wrote: >> >> I like SnapNrack 200 Series as well as DPW Solar Multi Pole Mount. >> >> On Feb 4, 2014, at 3:28 PM, Kelly Larson <[email protected] >> <mailto:[email protected]>> wrote: >> >> Hi, >> >> We are looking to install some 4KW ground mounted arrays. What >> racking are you using? Best ground connection? Wire management? >> The shows have so many choices, and I keep doing the same ol >> thing... >> >> >> Blessings, >> >> Kelly >> >> Kelly Larson >> >> Electrical Engineer >> >> NABCEP Certified Solar PV Installation Professional >> >> IREC Certified Master Trainer >> CA Electrical Contractor# 868189 >> >> SolarKelly.com <http://solarkelly.com/> >> >> >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: [email protected] >> >> Change email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
