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OK. So I will have a high rate of acceptance if it buy an Tyco
vacuum relay, and mount it in a Hoffman enclosure, and then put it
on my roof?<br>
<br>
<div class="moz-cite-prefix">On 1/21/2014 5:45 PM, Bill Brooks
wrote:<br>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Brian,<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The
requirement is generic. A listed contactor can meet the
requirement. A standard is only necessary for products that
want to be innovative in meeting the 30V, 240VA. Killing all
power is an option with existing listed equipment. NEC 90.4
does not apply.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Bill.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><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"">
<a class="moz-txt-link-abbreviated" href="mailto:re-wrenches-bounces@lists.re-wrenches.org">re-wrenches-bounces@lists.re-wrenches.org</a>
[<a class="moz-txt-link-freetext" href="mailto:re-wrenches-bounces@lists.re-wrenches.org">mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On
Behalf Of </b>Brian Mehalic<br>
<b>Sent:</b> Tuesday, January 21, 2014 2:36 PM<br>
<b>To:</b> RE-wrenches<br>
<b>Cc:</b> <a class="moz-txt-link-abbreviated" href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a><br>
<b>Subject:</b> Re: [RE-wrenches] NEC 2014 690.12 Rapid
Shutdown<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<p class="MsoNormal">It was suggested to me that since
690.12(5) requires the equipment to be listed and
identified, and there is no standard for rapid shutdown
equipment to be listed to then 90.3 (.4?...oh why isn't the
NEC on my iPad...)says 'revert to the previous version of
the NEC' and presto, no need to install rapid shutdown. I
don't like this but the the person suggesting it certainly
has an audience and this will appeal to installers looking
to save on cost wherever possible. <br>
<br>
Sent from my iPad<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On Jan 21, 2014, at 5:11 PM, David Brearley <<a
moz-do-not-send="true"
href="mailto:david.brearley@solarprofessional.com">david.brearley@solarprofessional.com</a>>
wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal">Drake,<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">The language in 690.12 is the
compromise solution that was reached to ensure continued
industry stability. The alternative to the
combiner-level shutdown was module-level shutdown. It
took a consolidated industry effort to push the
module-level requirements out one more Code cycle—for
the exact reasons that you touch on below. <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Not sure if this link has been
published on the Wrenches list or not, but it provides
some background on the topic:<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><a moz-do-not-send="true"
href="http://www.youtube.com/watch?v=sUXShMZJorQ">http://www.youtube.com/watch?v=sUXShMZJorQ</a><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black">David
Brearley<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black">Senior
Technical Editor,<span
class="apple-converted-space"> </span><i>SolarPro</i><span
class="apple-converted-space"> </span>magazine<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black">NABCEP
Certified PV Installation Professional<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black"><a
moz-do-not-send="true"
href="mailto:david.brearley@solarprofessional.com">david.brearley@solarprofessional.com</a><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black">Direct:
541.261.6545<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black"><o:p> </o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Jan 21, 2014, at 1:12 PM, <a
moz-do-not-send="true"
href="mailto:re-wrenches-request@lists.re-wrenches.org">re-wrenches-request@lists.re-wrenches.org</a>
wrote:<o:p></o:p></p>
</div>
<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal"><b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:#7F7F7F">From:<span
class="apple-converted-space"> </span></span></b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">Drake
<<a moz-do-not-send="true"
href="mailto:drake.chamberlin@redwoodalliance.org">drake.chamberlin@redwoodalliance.org</a>><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:#7F7F7F">Subject:<span
class="apple-converted-space"> </span></span></b><b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">Re:
[RE-wrenches] NEC 2014 690.12 Rapid Shutdown</span></b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif""><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:#7F7F7F">Date:<span
class="apple-converted-space"> </span></span></b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">January
21, 2014 11:36:15 AM CST<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:#7F7F7F">To:<span
class="apple-converted-space"> </span></span></b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">RE-wrenches
<<a moz-do-not-send="true"
href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif";color:#7F7F7F">Reply-To:<span
class="apple-converted-space"> </span></span></b><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif"">RE-wrenches
<<a moz-do-not-send="true"
href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>><o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:13.5pt;font-family:"Helvetica","sans-serif""><br>
<br>
<br>
<span class="apple-style-span">Bill,</span><br>
<span class="apple-style-span"> </span><br>
<span class="apple-style-span">It is good to see
that energized conductors are going to be
disconnected near the arrays. I've been an
advocate of disconnecting these conductors by
ground fault sensing equipment since ground
fault detection was first implemented in the
code. If contactors are to be installed on
roofs, it likely won't be long before both
ground faults and arc faults are automatically
cleared.</span><span
class="apple-converted-space"> </span><br>
<span class="apple-style-span"> </span><br>
<span class="apple-style-span">When the
requirement for AC arc fault branch circuit
protection was first put in the NEC, it was
postdated to allow time for the electrical
industry to adapt. This new remote disconnecting
requirement does not provide any lead time. </span><span
class="apple-converted-space"> </span><br>
<span class="apple-style-span"> </span><br>
<span class="apple-style-span">As the 2014 NEC is
adopted in various jurisdictions, inspectors may
feel that it is necessary to disallow systems
without the newly required disconnect feature.
This may result in serious problems for solar
companies and customers, as well as
manufacturers.</span><span
class="apple-converted-space"> </span><br>
<span class="apple-style-span"> </span><br>
<span class="apple-style-span">The protection of
firefighters is essential. The implementation of
renewables is essential also. Insurance claims
for weather related, global warming-triggered
climatic disasters are rising exponentially.
Extreme weather related events result in major
loss of life and billions of dollars in property
damage. Atmospheric CO2 levels continue to climb
from the burning of fossil fuels. This is a
crisis of global proportions.</span><span
class="apple-converted-space"> </span><br>
<span class="apple-style-span"> </span><br>
<span class="apple-style-span">My request for code
writers is to please take into account the
effect that inserting new rules into the NEC may
have on the stability of renewable energy, and
implement new requirements in a way that will
allow for a smooth interface.</span><br>
<span class="apple-style-span"> </span><br>
<span class="apple-style-span">Thank you,</span><span
class="apple-converted-space"> </span><br>
<span class="apple-style-span"> </span><br>
<span class="apple-style-span">Drake</span><span
class="apple-converted-space"> </span><br>
<br>
<span class="apple-style-span">Drake Chamberlin</span><br>
<span class="apple-style-span"><i>Athens Electric
LLC</i></span><i><br>
<span class="apple-style-span">OH License 44810</span><br>
<span class="apple-style-span">CO License 3773</span><br>
<span class="apple-style-span">NABCEP Certified
Solar PV</span><span
class="apple-converted-space"> </span><br>
<span class="apple-style-span">740-448-7328</span><br>
</i><span class="apple-style-span"><a
moz-do-not-send="true"
href="http://athens-electric.com/">http://athens-electric.com/</a></span></span><o:p></o:p></p>
</blockquote>
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