http://solarabcs.org/about/publications/reports/module-grounding/index.html
(see the Issues & Recommendations report)
Phil is right that UL 2703 isn't finalized yet so it's not actually a
requirement. However, I imagine that module installation manuals and UL
1703 will both refer to 2703 soon, so it's not something that you'll be
able to ignore forever either. Since 2703 still isn't approved (see:
http://www.ul.com/global/eng/pages/solutions/standards/accessstandards/catalogofstandards/standard/?id=2703_1
), I don't see how Unirac can claim that they have an ETL mark for 2703.
Ray is right that "an AHJ can't reasonably require equipment that
doesn't exist." Just as NEC 2011 690.11 doesn't require you to use
string inverters with arc fault protection, since no such unit is
available (well, at least until SMA just started offering this for their
standard low-freq Sunny Boys)-- no inspector should require anything
listed to UL 2703 yet.
A relevant section is 90.4 (this section is copied from 2008).
**
The authority having jurisdiction for enforcement of the Code has the
responsibility for making interpretations of the rules, for deciding on
the approval of equipment and materials, and for granting the special
permission contemplated in a number of the rules.
By special permission, the authority having jurisdiction may waive
specific requirements in this Code or permit alternative methods where
it is assured that equivalent objectives can be achieved by establishing
and maintaining effective safety.
This Code may require new products, constructions, or materials that may
not yet be available at the time the Code is adopted. In such event, the
authority having jurisdiction may permit the use of the products,
constructions, or materials that comply with the most recent previous
edition of this Code adopted by the jurisdiction.
**
On 2012/7/20 0:52, Marco Mangelsdorf wrote:
Thanks, Phil.
I just went to that website and do not know exactly what report you're
referring to.
Could you please provide the link?
marco
I don't think it's formally ratified, certified and adopted, but
UL2703 is the new proposed "Standard for Mounting Systems, Mounting
Devices, Clamping/Retention Devices, and Ground Lugs for Use with
Flat-Plate Photovoltaic Modules and Panels." Also check out
SolarABCs.org for an update, there is a new report on this topic.
Phil
On Thu, Jul 19, 2012 at 4:12 PM, Jay Peltz <j...@asis.com> wrote:
Is unistrut UL?
Kay
Peltz power
Sent from my iPhone
On Jul 19, 2012, at 6:36 PM, "Marco Mangelsdorf" <ma...@pvthawaii.com>
wrote:
Does anyone know whether there are U.L. standards when it comes to PV
mounting hardware?
That is, are there any mounting hardware manufacturers (UniRac,
Professional
Solar Products, DPW, Schletter) who have achieved U.L. listing/approval
for
their stuff?
After using PSP for the past 12 years here on the Big Island of Hawaii,
now,
all of a sudden the new building division head is taking an interest as to
whether PSP hardware is U.L. something or other.
So very frustrating....
Thanks,
marco
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