NFPA 855 and 2021 IFC, IRC, and NFPA 1ESS must be listed and labeled in accordance with UL 9540 and installed per the manufacturer's instructions.
[PDF Version]
How far apart should storage units be positioned? Therefore, if you install multiple storage units, you have to space them three feet apart unless the manufacturer has already done large-scale fire testing and can prove closer spacing will not cause fire to propagate between.
[PDF Version]
5 of NFPA 855, we learn that individual ESS units shall be separated from each other by a minimum of three feet unless smaller separation distances are documented to be adequate and approved by the authority having jurisdiction (AHJ) based on large-scale fire testing.
[PDF Version]
5 of NFPA 855, we learn that individual ESS units shall be separated from each other by a minimum of three feet unless smaller separation distances are documented to be adequate and approved by the authority having jurisdiction (AHJ) based on large-scale fire testing.
[PDF Version]
