Kirk, Just zip tie your DC stuff together and your AC stuff together and keep the two bundles separate. Then they can be in the same trough. At least that's the way we do it. I don't know about in the same conduit, I'd guess no.
Conrad Cotuit Solar -----Original Message----- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kirk Herander, VSE Sent: Saturday, April 09, 2011 9:29 PM To: k...@vtsolar.com; 'RE-wrenches' Subject: Re: [RE-wrenches] 690.4 (B) ??? PS Does this merely mean that conductors from more than one source must be bundled("connected") together, but are allowed in the same conduit? Kirk Herander Vermont Solar Engineering 802.863.1202 NABCEP(tm) Certified Solar Installer NYSERDA-eligible Installer VT Solar Incentive Program Partner -----Original Message----- From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Kirk Herander, VSE Sent: Saturday, April 09, 2011 9:10 PM To: 'RE-wrenches' Subject: [RE-wrenches] 690.4 (B) ??? 2008 NEC states that: (B) Conductors of Different Systems. Photovoltaic source circuits and photovoltaic output circuits shall not be contained in the same raceway, cable tray, cable, outlet box, junction box, or similar fitting as feeders or branch circuits of other systems, unless the conductors of the different systems are separated by a partition or are connected together. Can anyone describe and give an example of what "connected together" means to inverter PV circuits in the same conduit as a branch (load) circuit? I have a single existing PVC conduit to a barn with an AC load subpanel. I want to run the output conductors of an inverter combiner panel in the barn through the same conduit to get to be main building. The fill / derating calcs work to do this. The inspector says I have to run a new conduit for the AC inverter combiner because the subpanel feeder and the combiner output conductors are "not connected". But they are both connected to the main building panel. Any insight will be appreciated. Thanks. I've also been told that the NEC 2011 comments on 690.4 (B) clarify this. Can anyone comment? Obviously I am not mixing DC and AC conductors. Kirk Herander Vermont Solar Engineering 802.863.1202 NABCEP(tm) Certified Solar Installer NYSERDA-eligible Installer VT Solar Incentive Program Partner _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org 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: RE-wrenches@lists.re-wrenches.org 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: RE-wrenches@lists.re-wrenches.org 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
