Nick, Forgive me as I am referencing NEC 2008. But 690.64 (B) Load Side, "...and where this distribution equipment is capable of supplying multiple branch circuits, or feeders, or both...shall comply..." To the extent the accumulation panel is NOT capable of supplying other circuits, then NONE of the requirements of 690.64 (B) apply and the rating of both the load center and the load center feeder need only be sufficient to carry the connected load which would be 1.25 times the output rating of all the inverters. If you do need to add branch circuits to the dedicated load center for things like monitoring equipment, it is reasonable that the above remain unchanged so long as there is permanent marking stating that no additional load circuits can be added (only supported by Code to the extent AHJ's can make determination of acceptability.)
Mark Frye Berkeley Solar Electric Systems 303 Redbud Way Nevada City, CA 95959 (530) 401-8024 <http://www.berkeleysolar.com/> www.berkeleysolar.com _____ From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Nick Vida Sent: Sunday, January 22, 2012 8:36 AM To: wrenches Subject: [RE-wrenches] Paralleling Mutlitple Inverter That is very interesting Jay, do you have a code reference for no derate needed for your solar accumulation panel? Thanks, Nick Vida btw- Rich, thanks for Bernie Sanders.
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