Drake, The size of the GEC is limited by the grounding electrode system. Keep that in mind since that normally limits the size of the GEC dramatically.
Bill. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Drake Chamberlin Sent: Tuesday, March 03, 2009 8:07 AM To: RE-wrenches Subject: [RE-wrenches] 4/0 GEC Hello Wrenches, Revisiting the grounding requirements for DC systems, the grounding electrode conductor is still required to be as large as the "largest conductor supplied by the system" (250.166(B). When we run a GEC to a piping system, or the re bar cage embedded in the concrete foundation of a building, it still reads like we need to meet this requirement. If the system is a 24 volt, battery connected, VFX 3524, it still seems that we would need to run a 4/0 GEC. Inspectors backed off making us do this a dozen years ago. Why are we not being required to do this now? Thanks, Drake Chamberlin Athens Electric OH License 44810 CO License 3773 740-448-7328 740-856-9648 _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] 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 _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] 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
