Aaron, I am still back at NEC 2008 on this but see 690.47 (C), especially (3) ..a single conductor shall be permitted to be used to perform the multiple functions of dc grounding, ac grouding,.....(5) a common buss bar shall be permitted to be used for both systems (6) a common grounding electrode shall be permitted to be used for both systems... Review this article and share it with your inspector in order to determine what is motivating him. 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 Aaron Mandelkorn Sent: Tuesday, September 06, 2011 12:59 PM To: RE-wrenches Subject: [RE-wrenches] Grounding Requirement Question Wrenches, Just installed a Magnum MS-PAE battery based system on an E-Panel distribution box and my inspector seems to have an issue with the grounding. He is saying that I must run an additional GEC down to the ground rod because I am dealing with two separate grounding systems. The DC and AC side of the grounding system shares the same ground buss bar in the E-Panel so why wouldn't a single GEC down to the ground rod suffice? The buss bar is where the two systems get grounded together rather than at the rod. The inspector is telling me to either dig up the rod and run an additional GEC down to it or connect the additional GEC to the existing with an irreversible splice. Am I missing something here? This requirement just seem redundant and wasteful. If I do have to make the correction I will be going with the splicing option. Some advise on irreversible splices would also be greatly appreciated. I can't seem to source them locally and have never used them before. Thanks for any help. Aaron Mandelkorn NABCEP Certified PV Installer Renewable Energy Outfitters (970)596-3744 reoso...@gmail.com www.reosolar.com
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