I have a system with Enphase inverters that has a 1/2" cable crossing 8-10ft above the array. I used the Enphase inverters specifically for isolating that shading, but have seen no noticeable impact on production from the modules being shaded.
Dana Dana Brandt Ecotech Energy Systems, LLC www.ecotechenergy.com [email protected] 360.510.0433 On Mon, Oct 11, 2010 at 8:17 PM, Nick Soleil <[email protected]>wrote: > I have some anecdotal experience that may be valuable. I just recently > installed a system under a set of 3 power and 3 phone wires located about > 20' above the array. The system was installed with Enphase micro-inverters, > so I could clearly see the effect of the wires on the shaded modules. I > just checked todays production, and the modules with wire shadows on them > were producing 18-21% less per module than the modules without the shadows. > At another site with just one 1/2" phone wire located 3' above a > module, that module is producing 2-3% less when shaded. > > Nick Soleil > Project Manager > Advanced Alternative Energy Solutions, LLC > PO Box 657 > Petaluma, CA 94953 > Cell: 707-321-2937 > Office: 707-789-9537 > Fax: 707-769-9037 > > > ------------------------------ > *From:* Eric Thomas <[email protected]> > > *To:* [email protected] > *Sent:* Mon, October 11, 2010 12:28:33 PM > > *Subject:* [RE-wrenches] Power line shading > > Hey there, > > We have a string inverter system installation coming up that has a power > line suspended over the roof. The line is diagonal to the roof and about 20' > above the surface. It will be very challenging to configure the strings to > mitigate shading. Does anyone have experience with the effects on producion > from the thin shadow cast by the powerline? > > Thanks > > Eric Thomas > Solar Epiphany LLC > Seattle > (206)919-3014 > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & 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 > > >
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