Karl -
Is this instant excess or excess during a specific billing period? Does this violate Federal regulations? Could you divert or bank the excess in process heat, water pumping, or some other function? Dana Orzel Great Solar Works, Inc E - [email protected] V - 970.626.5253 F - 970.626.4140 C - 970.209.4076 web - www.solarwork.com "Responsible Technologies for Responsible People since 1988" Do not ever believe anything, but seriously trust through action. From: [email protected] [mailto:[email protected]] On Behalf Of Karl Jaeger Sent: Tuesday, February 15, 2011 3:21 PM To: [email protected] Subject: [RE-wrenches] "Keep that there PV off my grid!" Greetings Esteemed Wrenches, My company was recently tasked to engineer a PV project in Alabama. We sat down for a meeting with all of the local big-shots. They proceeded to let us know that we are not allowed to feed any excess PV power onto their grid, production cannot exceed demand. I am hoping that y'all might be able to steer me towards a contactor assembly or device that would detect reverse current flow, trigger the contactor, then open up the inverter AC output circuit. The service is 3-phase, 208 volt. The maximum current we intend to introduce is 70 amps, continuous. Appreciate your advice, Karl Jaeger Operations Manager LightWave Solar Electric www.lightwavesolar.com
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