[RE-wrenches] 690.47(D)

[Glenn Burt]

FYI, this has changed to more of a permissive rule in the 2017 NEC, than the mandatory one in 2014.

-----Original Message-----
From: "August Goers" <august at luminalt.com>
Sent: ‎1/‎30/‎2017 13:47
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Subject: Re: [RE-wrenches] 690.47(D)

Hi Mark,

The current issue of IAEI magazine has an article writing by Bill Brooks
called "Hot Topics for PV System Installations." In the article, he
directly addresses 2014 NEC 690.47(D).

Unfortunately I don't see this article posted online, but you might want
to check it out if you can find it.

My understanding is that the intent of 690.47(D) is to require an
additional electrode when PV is installed on structures that don't already
have and electrode system such as a separate building, garage, etc.

August

-----Original Message-----
From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On
Behalf Of markf at berkeleysolar.com
Sent: Monday, January 30, 2017 10:24 AM
To: re-wrenches at lists.re-wrenches.org
Subject: [RE-wrenches] 690.47(D)

Folks,

NEC 2014 is in effect in California. I just pulled a permit for a
residential system and it had a little stamp that had 690.47(D) circled as
a requirement.

Anyone worked with AHJ's in California who are now requiring this? I am
planning to not install the electrode, siting Exception 2 and trying to
say that the existing electrode next to the build is "next to the array"?

Mark


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