<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I emailed and eventually spoke with the building inspector supervisor and got him to agree that what they're looking for is an AC disconnect, within sight of the ESS which disconnects and locks open any connection to the house. He was going to reiterate to his inspectors that it is not between the battery and the inverter. <br id="lineBreakAtBeginningOfSignature"><div dir="ltr"><div>Michael D Nelson</div><div>MD Electric & Solar, Inc.</div><div>707-684-0064 mobile</div><div>707-884-1862 office</div><div>www.mdelectricsolar.com</div><div>www.facebook.com/mdelectricandsolar</div><br></div><div dir="ltr"><br><blockquote type="cite">On Jul 30, 2025, at 12:21 PM, Jason Szumlanski via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">True, but a suitable DC rated disconnect switch with large enough terminals is going to be very expensive.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">The whole thing boils down to the definition of an ESS. Getting the inspector to realize that the 706.2 disconnect is not required to be a<b> battery</b> disconnect is key here.</div><br clear="all"></div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><br>Jason Szumlanski<div><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Principal Solar Designer | Florida Solar Design Group</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">NABCEP Certified Solar Professional (PVIP)</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Florida State Certified Solar Contractor CVC56956</span></div><div><font color="#333333" face="Roboto, RobotoDraft, Helvetica, Arial, sans-serif">Florida Certified Electrical Contractor EC13013208</font></div></div></div></div><br></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Tue, Jul 29, 2025 at 11:38 PM William Miller via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg8779945791219615162"><div lang="EN-US"><div class="m_8779945791219615162WordSection1"><p class="MsoNormal"><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)">Jason:</span></p><p class="MsoNormal"><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)"> </span></p><p class="MsoNormal"><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)">Fine stranded cables can be used with set screw terminals if you use ferrules.</span></p><p class="MsoNormal"><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)"> </span></p><p class="MsoNormal"><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)">You hint at a broader point: The industry is not providing solutions that the regulators are demanding. Any battery with BMS should have a remote inhibit. Problem solved.</span></p><p class="MsoNormal"><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)"> </span></p><p class="MsoNormal"><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)">William</span></p><p class="MsoNormal"><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)"> </span></p><p class="MsoNormal"><span style="font-family:Arial,"sans-serif";color:rgb(31,73,125)">Miller Solar</span></p><p class="MsoNormal"><span style="font-family:Arial,"sans-serif";color:rgb(31,73,125)">17395 Oak Road, Atascadero, CA 93422</span></p><p class="MsoNormal"><span style="font-family:Arial,"sans-serif";color:rgb(31,73,125)">805-438-5600</span></p><p class="MsoNormal"><span style="font-family:Arial,"sans-serif";color:rgb(31,73,125)"><a href="http://www.millersolar.com/" target="_blank"><span style="color:blue">www.millersolar.com</span></a></span></p><p class="MsoNormal"><span style="font-family:Arial,"sans-serif";color:rgb(31,73,125)">CA Lic. 773985</span></p><p class="MsoNormal"><span style="font-size:11pt;font-family:Calibri,"sans-serif";color:rgb(31,73,125)"> </span></p><p class="MsoNormal"><span style="font-family:Verdana,"sans-serif";color:rgb(31,73,125)"> </span></p><p class="MsoNormal"><b><span style="font-size:10pt;font-family:Tahoma,"sans-serif"">From:</span></b><span style="font-size:10pt;font-family:Tahoma,"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>Jason Szumlanski via RE-wrenches<br><b>Sent:</b> Tuesday, July 29, 2025 2:45 PM<br><b>To:</b> RE-wrenches<br><b>Cc:</b> Jason Szumlanski<br><b>Subject:</b> Re: [RE-wrenches] Battery RSD</span></p><p class="MsoNormal"> </p><div><div><div><div><p class="MsoNormal"><span style="font-family:Arial,"sans-serif"">The problem I see with just complying is that there is really no practical or cost-effective way to comply. You would have to somehow transition from battery cable to some other cable type, because typical fusible disconnect switch lugs are not going to be rated to accept fine-stranded battery cable, especially in the required size. </span></p></div><div><p class="MsoNormal"><span style="font-family:Arial,"sans-serif""> </span></p></div></div></div></div></div></div>
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