You will probably use PVwire. As far as I am aware it will be your least expensive option. Get it in aluminum, direct-burial rated if you want. Or pre-sleeved in PVC conduit.
Matt On Tue, May 17, 2016 6:52 pm, Howard Arey wrote: > Good day, wrenches. > > > > > I am installing four dual axis trackers totaling 52KW (13KW per) to four > individual Fronius Primo 12.5 Primo's. We've done this setup before > except this time, we'll mount the inverter at the meter instead of > carrying inverting at the tracker and carrying 240 volt over a 300+ foot > ground run for the four combined trackers. And to the heart of this > question, we'll run under 1,000 volt rules for this commercial ranch > setup. Goal is to user higher voltages and minimize amps running through > conductors. > > > > So my project is: > > > > > 4 each 13KW trackers > > > Each tracker is 3 strings of 14 modules and about 705Voc and 520 Vmp. > This > combined 3-string output for each tracker will have Isc of 8.89 x 3 = apc > 27 > amps > > We'll pull each set of tracker conductors (4 trackers, plus one more run > for a 5th tracker) so 10 +/- conductors. I've done the necessary > conditions of use derates. > > > > The big question is what would you select as this 1,000 volt rated wire > for conduit covered installation? PV Wire will get mighty expensive and I > don't even know if I'll find in 4AWG. > > > > I ran into this one time before and we just did multiple strings to keep > in the 600volt category but I don't want to do here because that means I > double the number of conductors (and go from 3200 to 6400 feet of > wire.String math and MPP ranges keep me at strings of 14. > > > > I want to centrally mount the inverters instead of one at each tracker > for looks and reduce 240 wire sizing. > > > > What type cable would you use? > > > > > Howard "Scot" Arey > > > Owner, Solar CenTex > > > 254-300-1228 > > > scot.a...@solarcentex.com > > > > www.solarcentex.com <http://www.solarcentex.com> > > https://www.facebook.com/SolarCentex > > > http://www.solarreviews.com/installers/solar-centex-reviews/ > > > > > > > > > _______________________________________________ > 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.ht > ml > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > Matthew Partymiller Solar Energy Solutions LLC (877) 312-7456 m...@solar-energy-solutions.com _______________________________________________ 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
