SolarPro also published an article on this subject, written by Marvin Hamon, PE, entitled ³Calculating 3-Phase Line Currents.² Subscribers can access the HTML version of the article at the URL below or click the ³PDF Version² link on that page to download the article as it appeared in the magazine:
http://solarprofessional.com/article/?file=SP3_1_pg66_Hamon&search= Best regards, David Brearley, Senior Technical Editor SolarPro magazine NABCEP Certified PV Installer On 12/7/10 8:47 AM, "Glenn Burt" <glenn.b...@glbcc.com> wrote: > Al, > > SMA has a good whitepaper on their site covering this, and there was an > article in a recent Solar Pro covering this topic as well > Good Luck! > Glenn Burt > > > From: re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Al Frishman > Sent: Tuesday, December 07, 2010 5:51 AM > To: re-wrenches@lists.re-wrenches.org > Subject: [RE-wrenches] NEC 690.64 (B) (2) > > Wrenches, > How do you apply NEC 690.64 (B) (2) when you have multiple single phase > inverters distributed across the 3 phases of an electric-panel via 2 pole > breakers? > > Do you simply add up the total of all over-current devices feeding the > panel (Inverter 2-pole breakers and main breaker) or is there a 3 phase > formula that gets applied? > > It seems logical that if the single phase inverters are connected with 2-pole > breakers > Distributed across the 3 phases then you would take the sum of what is on each > phase. > > Any and all input on this topic is appreciated. > > Regards, > Al > Aeonsolar > 917 699 6641 > > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > 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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