No failures here either, always #10 thhn strands and a few from the old days (2001) that used marine wire at the pivot point! --Dave
> > > Ray I have never (yet) had a wire failure in any of my trackers, l have > always used PVC flex tubing connected at both ends with a long line that > at any given point does not move much. I mainly use zomeworks passive > sonhle axes trackers but have done it the same way with array technologes > dual axes unitsJerry > > > Sent from my Verizon, Samsung Galaxy smartphone > > -------- Original message -------- > From: Ray <r...@solarray.com> > Date: 4/19/18 1:05 PM (GMT-10:00) > To: re-wrenches@lists.re-wrenches.org > Subject: Re: [RE-wrenches] Looking for insulated #6 bare standoff > > On tracking arrays, I have had both solid and stranded copper ground > wire strain harden and break. The cyclical motion will slowly work away > at coarse cables. I've even seen solid #6 break off on just a tilt > adjustable array. I now use a braided ground strap at least for the rack > to pole ground connection. This is the same strap that is used to > ground generators and other moving electrical equipment. > > https://www.delcity.net/store/Ground-Straps/p_818655.h_818654 > > I isolate it at the connection to the aluminum with a sandwich of > Stainless fender washers and a 1/4" bolt with toothed lock washer to > bite into the AL, or it also works well folded in ground Lugs and buss > bars. You can open up the weave of the braided copper in the middle to > get the 1/4" bolt through. I've checked these years later: no > corrosion, wire not broken off at the connector. > > Ray > > > On 4/19/18 3:48 PM, Dana wrote: >> The bare #8 is an EGC for #10 USE PV wire on the tracker to the array >> mounted combiner box. >> >> ---------------------------------------------------------------------------- >> Dana Orzel                             >> Great Solar Works, Inc. >> C - 208.721.7003                      >> d...@solarwork.com >> Idaho Contractor - # 028765        Idaho PV # 028374 >> NABCEP # 051112-136                      >> www.solarwork.biz >> "Responsible Technologies for Responsible People since 1988" >> ï Please consider the environment before printing this email. >> >> >> -----Original Message----- >> From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> On Behalf >> Of Hilton Dier >> Sent: Thursday, April 19, 2018 3:39 PM >> To: re-wrenches@lists.re-wrenches.org >> Subject: [RE-wrenches] Looking for insulated #6 bare standoff >> >> Would #8 meet code? I thought that exposed ground wire had to be #6 >> minimum. >> >> Hilton Dier III >> Renewable Energy Design >> Missisquoi River Hydro LLC >> _______________________________________________ >> 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 > > _______________________________________________ > 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 > > Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ e-mail offgridso...@sti.net text 209 813 0060 _______________________________________________ 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
