111: Stored Electrical Energy Emergency and Standby Power Systems


Keep stored emergency power supply systems (SEPSS) reliable and safe with NFPA 111.

NFPA 111: Standard on Stored Electrical Energy Emergency and Standby Power Systems is key anywhere an Uninterruptable Power Supply (UPS) is needed in the event of a disruption of the normal utility supply. This Standard covers performance requirements for stored electric energy systems providing an alternate source of electrical power in buildings and facilities during an interruption of the normal power source. It’s used in industries such as finance, IT, and certain areas of health care — anywhere continuous emergency power is legally required and/or a loss of power is unacceptable, even for a short duration.

Improve life safety through reliable SEPSS.

Poor maintenance of battery systems is a common cause of failure in Stored Emergency Power Supply Systems (SEPSS). NFPA 111 includes installation, maintenance, operation, and testing requirements as they pertain to the SEPSS performance. Provisions address every area of the system including:

  • Power sources
  • Transfer equipment
  • Controls
  • Supervisory equipment
  • Accessory equipment needed to supply electrical power to selected circuits

To enhance usability, the 2019 edition has been revised to cover the interruption time without reference to specific SEPSS types.

NFPA 111 is essential for designers, engineers, contractors, installers, and facility managers of any building that requires a UPS according to NFPA 101: Life Safety Code or another code. In addition to improving occupant safety, compliance with NFPA 111 saves money by extending the life of the system through proper care.

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Item #: 111