[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

Re: [RE-wrenches] NEC 690.64 (B) (2)

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: Tu

Re: [RE-wrenches] NEC 690.64 (B) (2)

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:

Re: [RE-wrenches] NEC 690.64 (B) (2)

Actually, the article ³Can We Land² by Ryan LeBlanc and Tarn Yates probably has the best discussion of 690.64(B)(2) issues in particular: http://solarprofessional.com/article/?file=SP2_4_pg24_LeBlanc&search= Diagrams 2a & bm for example, should compliment the calculations in the Hamon article. D

Re: [RE-wrenches] Grant for schools non profit

Does the 30% grant for schools work? is it real? and how does it work? Thanks Darryl ___ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wren