[RE-wrenches] AC & DC in Raceway

[Louis Woofenden]

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 <drake.chamberlin at redwoodalliance.org> wrote
>