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WilIiam;<br>
<br>
checked out your guards on your website, that looks really clean,
but also like a lot of work and expense. I'm still so surprised
manufacturers are not offering an option like that to their frame
systems.<br>
My question: how come you didn't just fence the array? Shading
issues on the south?<br>
If fencing, what height of fence is considered adequate? 4 ft? 6
ft?<br>
<br>
<pre class="moz-signature" cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre>
<div class="moz-cite-prefix">On 9/4/2015 9:44 AM, William Miller
wrote:<br>
</div>
<blockquote
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<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d">Gary:</span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d">I
think the issue of PV wiring behind module that are readily
accessible is addressed in (2014) 690.31: </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><i><span
style="font-family:"Arial","sans-serif";color:#1f497d">Where
PV source and output circuits operating at maximum</span></i></p>
<p class="MsoNormal"><i><span
style="font-family:"Arial","sans-serif";color:#1f497d">system
voltages greater than 30 volts are installed in</span></i></p>
<p class="MsoNormal"><i><span
style="font-family:"Arial","sans-serif";color:#1f497d">readily
accessible locations, circuit conductors shall be</span></i></p>
<p class="MsoNormal"><i><span
style="font-family:"Arial","sans-serif";color:#1f497d">guarded
or installed in a raceway.</span></i></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d">I
am not sure what application the original poster had in
mind, but this is the question I think you are asking. The
interpretation to 690.31 seems clear to me: No one should
be able to touch the conductors without resorting to a
ladder, opening a locked gate or removing a protective
panel. Readily accessible is defined thusly:</span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><i><span
style="font-family:"Arial","sans-serif";color:#1f497d">Capable
of being </span></i></p>
<p class="MsoNormal"><i><span
style="font-family:"Arial","sans-serif";color:#1f497d">reached
quickly for operation, renewal, or inspections</span></i></p>
<p class="MsoNormal"><i><span
style="font-family:"Arial","sans-serif";color:#1f497d">without
requiring those to whom ready access is requisite</span></i></p>
<p class="MsoNormal"><i><span
style="font-family:"Arial","sans-serif";color:#1f497d">to
actions such as to use tools, to climb over or remove</span></i></p>
<p class="MsoNormal"><i><span
style="font-family:"Arial","sans-serif";color:#1f497d">obstacles,
or to resort to portable ladders, and so forth.</span></i></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d">Implementing
this is harder than it might seem. Lacking a fence, the
installer must either use the flimsy solar-scrim product or
fabricate his or her own shielding. We have put a fair
amount of effort towards this. See <a
moz-do-not-send="true"
href="http://www.millersolar.com/MillerSolar/practices/PV_wiring/Wire_shielding/_Wire%20Shielding_history.html">link</a>.</span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d">William</span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><img
id="Picture_x0020_1"
src="cid:part2.09020002.07080900@solarray.com"
alt="Gradient Cap_mini" border="0" height="28" width="64"><br>
Lic 773985<br>
<a moz-do-not-send="true" href="http://www.millersolar.com/"><span
style="color:blue">millersolar.com</span></a><br>
805-438-5600</span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
RE-wrenches [mailto:<a moz-do-not-send="true"
href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>]
<b>On Behalf Of </b>gary easton<br>
<b>Sent:</b> Friday, September 04, 2015 2:22 AM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] Guarding against live
parts 690.7 (D)</span></p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Bill </p>
<div>
<p class="MsoNormal">Are you saying there is no requirement
to shield wires on a ground array?<br>
<br>
On Friday, September 4, 2015, <<a moz-do-not-send="true"
href="mailto:billbrooks7@sbcglobal.net">billbrooks7@sbcglobal.net</a>>
wrote:</p>
<div>
<div>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Craig,</span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">This
one is easy to misinterpret. You missed the words
“live parts”. This has been removed from the 2017 NEC
because it is actually referring to load circuits
being fed directly by a PV system on the dc side. All
references to loads and batteries are being removed
from 690.</span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">This
is a complete non-issue.</span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Bill.</span></p>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p>
<div>
<div style="border:none;border-top:solid #e1e1e1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif"">
RE-wrenches [mailto:<a moz-do-not-send="true"
href="javascript:_e(%7B%7D,'cvml','re-wrenches-bounces@lists.re-wrenches.org');"
target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>]
<b>On Behalf Of </b>Craig Gerald Buttke<br>
<b>Sent:</b> Thursday, September 03, 2015 11:44 AM<br>
<b>To:</b> <a moz-do-not-send="true"
href="javascript:_e(%7B%7D,'cvml','re-wrenches@lists.re-wrenches.org');"
target="_blank">re-wrenches@lists.re-wrenches.org</a><br>
<b>Subject:</b> [RE-wrenches] Guarding against
live parts 690.7 (D)</span></p>
</div>
</div>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:13.5pt;font-family:"Century
Schoolbook","serif""><br>
<br>
How is everyone handling 690.7 (D)</span></p>
<div>
<p class="MsoNormal"
style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span
style="font-size:10.0pt;font-family:"Times","serif"">Circuits
over 150 Volts to Ground. </span></b><span
style="font-size:10.0pt;font-family:"Times","serif"">In
one- and two- family dwellings, live parts in
photovoltaic source circuits and photovoltaic output
circuits over 150 volts to ground shall not be
accessible to other than qualified persons while
energized. </span></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:13.5pt;font-family:"Century
Schoolbook","serif""><br>
<br>
If you have a commercial (non one or two-family
dwelling) are you screening your ground mount arrays
to keep people from touching live conductors PV
wires)?</span><br>
<br>
Thanks for your thoughts</p>
<pre>-- </pre>
<pre>Yours in Solardarity,</pre>
<pre> </pre>
<pre>Craig Gerald Buttke</pre>
<pre> </pre>
<pre>M:(715) 630-1227</pre>
<pre>O:(715) 630-6451</pre>
<pre>F:(715) 952-4501</pre>
<pre> </pre>
<pre>North Wind Renewable Energy, LLC</pre>
<pre>1626C W Pearl Street</pre>
<pre>Stevens Point, WI 54481</pre>
<pre> </pre>
<pre><a moz-do-not-send="true" href="http://www.northwindre.com" target="_blank">www.northwindre.com</a></pre>
<pre> </pre>
<pre>NABCEP Certified PV Installation Professional™</pre>
<pre>NABCEP Certified PV Technical Sales Professional™</pre>
<pre>State of WI: Master Electrician</pre>
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