Yes, what current did you use to calculate that voltage drop? How big is the PV system?
On Aug 16, 2016 11:38 AM, "Chris Mason" <[email protected]> wrote: > How much of the power produced will be self-consumed, how much will be > exported? > > On Tue, Aug 16, 2016 at 12:16 PM, Howard Arey <[email protected]> > wrote: > >> Good day, >> >> >> >> I have a potential client that has an existing 1,000 foot run from the >> meter and transformer at the street to the home. This is 4/0 Al and quick >> calcs show the voltage drop at over 12%. He acknowledges that the wire is >> undersized to keep voltage at/about 240 volts (I have not measured directly >> at the street / transformer yet). >> >> >> >> I know the wire has the necessary ampacity to carry his current service >> needs and to carry amps from the to-be-suggested solar system. >> >> >> >> My concern is that the voltage drop will change the 240 volts at the >> street/transformer/meter to 211ish (or will I see a higher 268’sh voltage >> at the far house end?) at the house. The inverter will try to synch to this >> voltage but of course this is outside of typical inverter parameters. >> >> >> >> So, instead of re-running much large wire, does anybody have experience >> and comments about potentially using a buck-boots transformer at the home >> to get us back to 240 volts? This would need to be service entrance sized. >> >> >> >> *Howard “Scot” Arey* >> >> Owner, Solar CenTex >> >> 254-300-1228 >> >> [email protected] >> >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> 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 >> [email protected]/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> >> > > > -- > Chris Mason > NABCEP Certified Solar PV Installer™ > Solar Design Engineer > Generac Generators Industrial technician > > www.cometsolar.com <http://www.cometenergysystems.com> > 264.235.5670 > 869.662.5670 > Skype: netconcepts > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: http://www.mail-archive.com/[email protected]. > 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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