Hi Jason, these might help: When agreeable with the ESS owner and approved by the AHJ, fire suppression systems and water supply are permitted to be omitted:
●IFC 1207.8 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. ●NFPA 855 4.11.8 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 4.1.5 <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> 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. I think the equipment manufacturer will have most of what you need for comm/decomm plan. On Thu, May 30, 2024 at 6:38 AM Jason Szumlanski via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > 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. > > On Thu, May 30, 2024, 8:38 AM Brian Mehalic via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> 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 "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. >> >> Brian Mehalic >> NABCEP Certified Solar PV Installation Professional™ R031508-59 >> National Electrical Code® CMP-4 Member >> (520) 204-6639 >> >> Solar Energy International >> http://www.solarenergy.org >> >> >> >> On Thu, May 30, 2024 at 3:17 AM Jason Szumlanski via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >>> 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. >>> >>> 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. >>> >>> Jason Szumlanski >>> Florida Solar Design Group >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> Pay optional member dues here: http://re-wrenches.org >>> >>> List Address: RE-wrenches@lists.re-wrenches.org >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> There are two list archives for searching. When one doesn't work, try >>> the other: >>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> http://www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> http://www.members.re-wrenches.org >>> >>> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> >> _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org > >
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