For GT using Solar edge or Enphase, its not so hard to comply, but If
you are looking at off grid systems, it's not just someone's opinion,
its $1,000s of dollars extra to comply with 690.12. It also results in a
system that is less reliable, which is less safe off grid where lives
depend on that power for heat, light, refrigeration, and even breathing
machines.
Ray Walters
Remote Solar
On 4/16/18 7:44 AM, Brian Mehalic wrote:
Hey y'all, I'm going to disagree about the NEC getting "worse and
worse when it comes to PV," (see disconnect and grounding
requirements, for instance!), but as with previous posters, that's
just an opinion.
Regarding location - the 2014 version had very little to say about the
location of any rapid shutdown initiation device; 2017 adds the
requirement [690.12(C)] that RS initiation devices for one- and
two-family dwellings be readily accessible (defined in Article 100),
AND outside the building. Seems reasonable for a device that is
intended to control energized conductors to make it more safe to enter
a building.
Cheers,
Brian Mehalic
NABCEP Certified Solar PV Installation Professional™ R031508-59
520.204.6639
Solar Energy International
http://www.solarenergy.org
SEI Professional Services
http://www.seisolarpros.com <http://www.seisolarpros.com>
On Mon, Apr 16, 2018 at 12:04 AM, Mark Frye <ma...@berkeleysolar.com
<mailto:ma...@berkeleysolar.com>> wrote:
Thanks Darryl.
I guess I can add that I am in CA and so looked only at the 2014.
I also looked at the 2017 article. Man, I have to say, my
impression remains that really starting with 2008 the code has
just gotten worse and worse when it comes to PV, but that is just me.
Not really sure what might need to be "Outside readily
accessible". Is there something other than 690.12 that I need to
look at?
Mark
On 4/15/2018 8:26 PM, Darryl Thayer wrote:
I think the code says Outside readily accessible,
On Sun, Apr 15, 2018 at 12:22 PM, Mark Frye
<ma...@berkeleysolar.com <mailto:ma...@berkeleysolar.com>> wrote:
Folks,
As I recall, an inverter and it's integrated DC disconnect
need only be placed in an accessible location. I am thinking
of putting an inverter high up on the wall inside a garage.
That would be OK vis-a-vis the location of the disconnect
(still accessible for maintenance).
If I do put the inverter high up on the wall, I can limit my
DC conductors to less that 10 feet total from the array and
less that 5 feet inside the garage.
That means I get the exemption from the rapid disconnect
requirement, right?
There is nothing in the Code linking the accessibility of the
DC disconnect to the exemption from rapid shutdown, right?
Mark Frye
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