<div dir="ltr"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div style="line-height:115%;margin:0pt 0in 0pt 0.5in;unicode-bidi:embed"><span style="color:rgb(89,89,89);font-family:Arial"><span style="font-size:18pt">Hi Jason, these might help: </span><span style="font-size:24px"><br></span></span><span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-size:15pt;font-family:Arial;color:rgb(89,89,89)"><br></span></div><div style="line-height:115%;margin:0pt 0in 0pt 0.5in;unicode-bidi:embed"><span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-family:Arial;color:rgb(89,89,89)">When
agreeable with the ESS owner and approved by the AHJ, </span><span style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;font-size:15pt;font-family:Arial;color:rgb(89,89,89);font-weight:bold">fire
suppression systems and water supply are permitted to be omitted:</span></div><div style="line-height:115%;margin:0pt 0in 0pt 0.5in;unicode-bidi:embed"><div style="line-height:115%;margin:0pt 0in 0pt 0.5in;direction:ltr;unicode-bidi:embed"><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89)"><br></span></div></div><div style="line-height:115%;margin:0pt 0in 0pt 0.5in;direction:ltr;unicode-bidi:embed"><span style="font-size:15pt"><span style="color:rgb(89,89,89);font-family:Arial;font-size:18pt">●</span></span><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89);font-weight:bold">IFC
1207.8 </span><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89)">Where
approved by the AHJ, the fire control and suppression systems, the size and
separation requirements, and the water supply are permitted to be omitted in
dedicated-use buildings located more than 100 ft (30.5 m) from
buildings, lot lines that can be built upon, public ways, stored combustible
materials, hazardous materials, high-piled stock, and other exposure hazards
not associated with electrical grid infrastructure.<br><br></span><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89);font-weight:bold">
</span></div>

<div style="line-height:115%;margin:0pt 0in 0pt 0.5in;direction:ltr;unicode-bidi:embed"><span style="font-size:15pt"><span style="color:rgb(89,89,89);font-family:Arial;font-size:18pt">●NFPA </span></span><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89);font-weight:bold">855
4.11.8 </span><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89)">When
approved by the AHJ, ESS shall be permitted to be installed in dedicated-use
buildings without the protection of an automatic fire control and suppression
system where large-scale fire testing conducted in accordance with </span><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89)"><a href="https://codesonline.nfpa.org/code/a7050263-8d7f-49dc-aa25-5d9382b24d27/098fd3b4-b6a0-4712-8e7c-7466fc10fa12/dddffe7c-57d4-47f9-8098-269b638cc05e/np_22edf922-de28-11e9-875c-c949b47f775b.html">4.1.5</a></span><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89)"> documents
that an ESS fire does not compromise the means of egress and does not present
an exposure hazard to buildings, lot lines, public ways, stored combustible
materials, hazardous materials, high-piled stock, and other exposure hazards
not associated with electrical grid infrastructure.</span></div><div style="line-height:115%;margin:0pt 0in 0pt 0.5in;direction:ltr;unicode-bidi:embed"><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89)"><br></span></div><div style="line-height:115%;margin:0pt 0in 0pt 0.5in;direction:ltr;unicode-bidi:embed"><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89)"><br></span></div><div style="line-height:115%;margin:0pt 0in 0pt 0.5in;unicode-bidi:embed"><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89)">I think the equipment manufacturer will have most of what you need for comm/decomm plan. </span></div><div style="line-height:115%;margin:0pt 0in 0pt 0.5in;unicode-bidi:embed"><span style="font-size:15pt;font-family:Arial;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;color:rgb(89,89,89)"><br></span></div><br><br></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, May 30, 2024 at 6:38 AM Jason Szumlanski 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 dir="auto">That is how I am reading it. Complying with chapters 4 through 9 would be required. However, I think it will be impossible to comply given the fire suppression requirements. This is a remote off-grid installation, and water supply would be an issue. And I'm not sure how to go about finding someone to write up a commissioning and decommissioning plan. </div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, May 30, 2024, 8:38 AM Brian Mehalic via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">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 dir="ltr">I'm not looking at the most recent editions right, but the previous versions of both 855 and the IRC both have statements to the effect of "<span style="color:rgba(0,0,0,0.85)"><font face="arial, sans-serif">ESS installations exceeding the permitted individual or aggregate ratings shall be installed in accordance with Section xxx" (pointing to the IFC in the case of the IRC, and pointing to Chapters 4-9 in the case of 855), in other words basically follow the (more onerous) rules for ESS on other than one- and two-family dwellings.</font></span><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><br></div><div>Brian Mehalic <br>NABCEP Certified Solar PV Installation Professional™ R031508-59</div><div>National Electrical Code® CMP-4 Member</div><div>(520) 204-6639<br><div><br></div><div><div><div>Solar Energy International<br><a href="http://www.solarenergy.org" rel="noreferrer" target="_blank">http://www.solarenergy.org</a></div></div></div></div><div><br></div></div></div></div></div></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, May 30, 2024 at 3:17 AM Jason Szumlanski via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer" target="_blank">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 dir="auto">Has anyone dealt with a large ESS installation that exceeds the aggregate storage limits in NFPA 855? The limits are quite low for very large single family homes. I have a situation where we need 120 kWh minimum for an off-grid home. There is a building dedicated for the inverters and batteries that is 400 feet from the main home. The intent was to house the batteries there, but we are in excess of the 80 kWh limit for an accessory structure. It would be impractical to house part of the batteries on an exterior wall.<div dir="auto"><br></div><div dir="auto">Are there any "loopholes" that might allow this larger ESS for this property? And if not, has anyone attempted to comply with Ch 4-9? That seems onerous. </div><div dir="auto"><br></div><div dir="auto">Jason Szumlanski</div><div dir="auto">Florida Solar Design Group </div></div>
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