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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">That’s correct it’s a manual disconnect and I agree it totally defeats the purpose but some AHJ’s are accepting that it’s within 5’ of entering the building and nowhere in
the code does it say it has to be readily accessible.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">We had one AHJ make us put the disconnect on the side of the house about 15’ feet up. I believe that photo was in the last issue of SolarPro. It was the dumbest thing we’ve
ever had to do and it looks ridiculous but that’s what the inspector wanted. <o:p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
<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""> RE-wrenches [mailto:re-wrenches-bounces@lists.re-wrenches.org]
<b>On Behalf Of </b>Mac Lewis<br>
<b>Sent:</b> Wednesday, August 27, 2014 10:02 AM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> Re: [RE-wrenches] Rapid shutdown questions<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi Will,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Yes I'm sure AHJ's will be all over the place for a while here in Colorado. To clarify, is this a manual disconnect in the attic? If so, that is really missing the whole idea of a rapid shutdown.<o:p></o:p></p>
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<p class="MsoNormal">Thanks<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Aug 27, 2014 at 7:47 AM, Will White <<a href="mailto:William.White@rgsenergy.com" target="_blank">William.White@rgsenergy.com</a>> wrote:<o:p></o:p></p>
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<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"">Our experience in MA with rapid shutdown unfortunately varies with AHJ. Some are letting us put an Eaton NEMA
4 disconnect on the roof next to the array. Some are letting us put a disconnect in an accessible attic within 5’ of the penetration. Some are requiring the Midnight Birdhouse remote switch which is expensive.</span><o:p></o:p></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""> </span><o:p></o:p></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"">Rapid shutdown doesn’t apply to pole or ground mounts.
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<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""> </span><o:p></o:p></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"">Hope this helps.</span><o:p></o:p></p>
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<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"">Will</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#999999">Will White</span></b><br>
<span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#999999">Operations Manager - New England
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.0pt;font-family:"Arial","sans-serif";color:#999999">RGS Energy</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt"><b><span style="font-size:8.0pt;font-family:"Calibri","sans-serif";color:#8A8A8A">Confidentiality Note:
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<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""> </span><o:p></o:p></p>
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<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 href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>]
<b>On Behalf Of </b>Mac Lewis<br>
<b>Sent:</b> Wednesday, August 27, 2014 8:32 AM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> [RE-wrenches] Rapid shutdown questions</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hello wrenches,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I am still trying to wrap my head around how to comply with rapid shutdown in off-grid and hybrid situations. I've got a few questions that maybe you can help with.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">1. What is a (currently listed) rapid shutdown system that will accommodate 8 strings? I know I can do this with Midnite combiners but as I understand these aren't listed yet.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">2. On a remote pole mount, does rapid shutdown apply? If the intent is to isolate a safe zone around an array for fire fighting, it seems as though a standard pole mounted DC
disconnect can cover this concern.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">3. I estimate on a typical hybrid installation, rapid shutdown will cost at least $3000 to implement. This includes remote shunt trip battery breakers, contactors on PV side of
charge controller and roof combiners, and running control cable from remote disconnect to all locations. As of now, this would also require me to modify listed interconnection equipment. Is this what others are finding?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">4. AC coupling with microinverters may be the easiest way to comply with most of these requirements. However, this doesn't seem like a great alternative to the standard charge
controller installation in an off-grid system.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks in advance for your thoughts<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">--
<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Mac Lewis<o:p></o:p></p>
<p><span style="color:#305A78">"Yo solo sé que no sé nada." </span><b><span style="color:#686868">-Sócrates</span></b><o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Mac Lewis<b><span style="font-family:"Arial","sans-serif";color:#FF9900"><o:p></o:p></span></b></p>
<p><span style="color:#305A78">"Yo solo sé que no sé nada." </span><b><span style="color:#686868">-Sócrates</span></b><b><span style="font-family:"Arial","sans-serif";color:#FF9900"><o:p></o:p></span></b></p>
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