[RE-wrenches] Are PV Systems are considered separately derived systems?

[Drake]

So long as there is a direct neutral connection between the two 
systems, the system is not separately derived.

At 04:15 PM 3/11/2011, you wrote:
>
>What's the best answer when someone asks if PV Systems are considered
>separately derived systems?
>
>It still seems to be up to whoever is doing the considering (AHJ), and I
>don't like that answer.
>
>I believe the answer is yes they are.  And 690.47 tells us how to ground
>them.
>
>"(C) Systems with Alternating-Current and Direct-Current Grounding
>Requirements. Photovoltaic systems having dc circuits and ac circuits with
>no direct connection between the dc grounded conductor and ac grounded
>conductor shall have a dc grounding system. The dc grounding system shall be
>bonded to the ac grounding system by one of the methods in (1), (2), or
>(3)."
>
>Any help is appreciated
>
>~Ryan
>
>_______________________________________________
>List sponsored by Home Power magazine
>
>List Address: RE-wrenches at 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

Drake Chamberlin
Athens Electric
OH License 44810
CO license 3773
NABCEP Certified PV
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20110317/60158bf3/attachment-0004.html>