On this one we can give John Wiles some credit. He was the only one years ago to interpret that section (690.4) as preventing, say, running landscape lighting in the same conduit as PV array wiring. He didn't make any distinction between PV source and output circuits, or between DC and AC current in the same conduit or raceway. But after getting his opinion I stopped worrying about separating PV source circuits and it has never been an AHJ issue here.
Allan Sindelar [email protected] NABCEP Certified Photovoltaic Installer EE98J Journeyman Electrician Positive Energy, Inc. 3201 Calle Marie Santa Fe, New Mexico 87507 505 424-1112 www.PositiveEnergySolar.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Louis Woofenden Sent: Thursday, September 24, 2009 6:02 PM To: RE-wrenches Subject: Re: [RE-wrenches] AC & DC in Raceway Hi Darryl, For what it's worth, the '08 Handbook explains regarding 690.4(B): "For example, 690.4(B) does not permit the conductors supplying an exterior luminaire located in close proximity to a roof-mounted PV array to be installed in the same raceway or conductors of of PV sources circuits or PV output circuits. Conductors directly related to a specific PV system, such as those is dc and ac output power circuits, may be contained in the same raceway as PV source and output conductors, providing that they meet the requeriments of 300.3(C)." Also, definition of "Solar Photovoltaic System" is "The total components and subsystems that, in combination, convert convert solar energy into electric energy suitable for connection to a utilization load." That being said, I can agree that can make sense to keep the AC and DC separate, as long as it can be done cleanly. We don't often mix here in Tucson, but haven't ever had issues with an AHJ if we have needed to. Best, Louis Woofenden Net Zero Solar Tucson, AZ Darryl Thayer wrote: > Sorry I differ with the comments, 690.4.B says'PV source and Output circuits shall not be combined with circuits of other systems.' The PV is different from any AC system. because they both feed the inverter it does not matter, same as a separately derived system. > Daryl > > --- On Thu, 9/24/09, Drake Chamberlin <[email protected]> wrote > _______________________________________________ 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
