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NFPA 110, Standard for Emergency and Standby Power Systems

2022 NFPA 110 Standard - Current Edition
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  • Description

    Help reduce risks to power systems with the 2022 edition of NFPA 110, Standard for Emergency and Standby Power Systems.

    Provide backup power systems users can trust and help protect people and property by using the updated requirements in NFPA 110, Standard for Emergency and Standby Power Systems. Readiness of emergency power in the case of disruption of the normal utility supply is a vital consideration in safeguarding building occupants. Unfortunately, poor installation, planning, and maintenance practices are all common causes of emergency power supply system (EPSS) failure.

    Improve occupant safety and help ensure systems are correctly installed, tested, and maintained.

    Comprehensive coverage in NFPA 110, Standard for Emergency and Standby Power Systems, addresses the following:

    • Power sources
    • Transfer equipment
    • Controls
    • Supervisory equipment
    • Related electrical and mechanical auxiliary and accessory equipment needed to supply electrical power to the load terminals of the transfer equipment

    Compliance with the updated standard can help save money by extending the life of the power system through proper care.

    Important changes in the 2022 edition can help you avoid errors and oversights. This edition introduces requirements for fuel cell systems used for Level 1 or Level 2 standby power. The fuel cell performance requirements parallel the performance requirements for generator sets.

    Annex information was added to the updated edition to help users by providing:

    • Explanation for understanding fuel quality issues
    • Assistance in identifying applicable standards and types of tests available
    • Guidance on how to mitigate deficiencies

    This standard has the latest coverage for designers, engineers, contractors, installers, and facility managers of any building that requires a backup generator or similar emergency system according to NFPA 101®, Life Safety Code®, or another code. Users in multiple fields can stay informed on the latest requirements and help avoid EPSS failure by staying up to date with the new edition of the standard.

    Order the 2022 edition of NFPA 110, Standard for Emergency and Standby Power Systems, today to help ensure every EPSS is compliant and ready to go when called upon. (Print, 48 pp., 2022)

  • Table of Contents (2022 Current Edition)

    NFPA® 110, Standard for Emergency and Standby Power Systems, 2022 Edition

    Chapter 1 Administration
    1.1 Scope.
    1.2 Purpose.
    1.3 Application.
    1.4 Equivalency.
    Chapter 2 Referenced Publications
    2.1 General.
    2.2 NFPA Publications.
    2.3 Other Publications.
    2.4 References for Extracts in Mandatory Sections.
    Chapter 3 Definitions
    3.1 General.
    3.2 NFPA Official Definitions.
    3.3 General Definitions.
    Chapter 4 Classification of Emergency Power Supply Systems (EPSSs)
    4.1 General.
    4.2 Class.
    4.3 Type.
    4.4 Level.
    Chapter 5 Emergency Power Supply (EPS): Energy Sources, Converters, and Accessories
    5.1 Energy Sources.
    5.2 Energy Converters.
    5.3 Energy Converters — Temperature Maintenance.
    5.4 Energy Converters — Capacity.
    5.5 Energy Converters — Fuel Supply.
    5.6 Rotating Equipment.
    5.7 Fuel Cell System Equipment.
    Chapter 6 Transfer Switch Equipment
    6.1 General.
    6.2 ATS Features.
    6.3 Requirements for Paralleled Generator Sets.
    6.4 Bypass-Isolation Switches.
    6.5 Protection.
    Chapter 7 Installation and Environmental Considerations
    7.1 General.
    7.2 Location.
    7.3 Lighting.
    7.4 Mounting.
    7.5 Vibration.
    7.6 Noise.
    7.7 Heating, Cooling, and Ventilating.
    7.8 Installed EPS Cooling System.
    7.9 Fuel System.
    7.10 Exhaust System.
    7.11 Protection.
    7.12 Distribution.
    7.13 Installation Acceptance.
    Chapter 8 Routine Maintenance and Operational Testing
    8.1 General.
    8.2 Manuals, Special Tools, and Spare Parts.
    8.3 Maintenance and Operational Testing.
    8.4 Operational Inspection and Testing.
    8.5 Records.
    Annex A Explanatory Material
    Annex B Diagrams of Typical Systems
    Annex C Informational References
  • Prior Editions

    2019 Edition

    Help protect lives and property—avoid EPSS failure by staying up to code with the latest edition of NFPA 110.

    Install, test, and maintain emergency power supply systems using revised and updated requirements in the 2019 edition of NFPA 110, Standard for Emergency and Standby Power Systems. Readiness of emergency power in the case of disruption of the normal utility supply is a vital consideration in safeguarding building occupants. Unfortunately, poor installation, planning, and maintenance practices are all common causes of emergency power supply systems (EPSS) failure. Help reduce risks by complying with NFPA 110.

    NFPA 110 is essential for confident and correct system installation, testing, and maintenance.

    Important changes in the 2019 edition help you avoid errors and oversights. For example, this edition clarifies the location and access to the remote emergency stop switch, how to test fuel in accordance with the manufacturer's recommendations in lieu of an ASTM standard, and specifications for a battery charger.

    In addition to improving occupant safety, NFPA 110 compliance helps save money by extending the life of the system through proper care.

    Comprehensive coverage addresses:

    • Power sources
    • Transfer equipment
    • Controls
    • Supervisory equipment
    • Related electrical and mechanical auxiliary and accessory equipment needed to supply electrical power to the load terminals of the transfer equipment

    Provide backup power systems you can trust.

    NFPA 110 has the latest coverage for designers, engineers, contractors, installers, and facility managers of any building that requires a backup generator or similar emergency system according to NFPA 101®, Life Safety Code®, or another code. Apply the 2019 edition of NFPA 110 to help ensure every EPSS is up to code and ready for use on demand. (Print, 46 pp., 2019)

    2016 Edition

    Comply with new NFPA 110, Standard for Emergency and Standby Power Systems to minimize the risk of system failure and protect lives.

    Readiness of emergency power in the case of disruption of normal utility supply is a vital consideration in safeguarding building occupants. Yet, poor installation planning and maintenance practices are common causes of failure of emergency power supply systems (EPSS). That's why the latest edition of NFPA 110, Standard for Emergency and Standby Power Systems is essential for confident and correct system installation, testing, and maintenance.

    In addition to improving occupant safety, NFPA 110 compliance saves money by extending the life of the system through proper care. Comprehensive coverage in the standard addresses:

    • Power sources
    • Transfer equipment
    • Controls
    • Supervisory equipment
    • Related electrical and mechanical auxiliary and accessory equipment needed to supply electrical power to the load terminals of the transfer equipment

    Keep systems up to code with recent changes and additions.

    Lessons learned through extreme weather events have raised serious issues concerning flooding and fuel problems. The 2016 edition of NFPA 110 has the latest coverage for designers, engineers, contractors, installers, and facility managers of any building that requires a backup generator or similar emergency system according to NFPA 101®, Life Safety Code®, or another code. In a significant change, the 2016 edition of NFPA 110 adds new verification tests and maintenance for paralleling gear that requires the entire system be tested to ensure the paralleling gear functions as intended.

    Provide backup power systems people can trust!

    Don't take risks where emergency power is concerned. Update to the 2016 edition of NFPA 110 to make sure every EPSS is up-to-code and ready for use on demand. (Softbound, 40 pp., 2016)

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  • How the NFPA Handbooks Differ from Codes and Standards

    THE NFPA HANDBOOKS DIFFER FROM CODES AND STANDARDS

    Ever wonder what the difference is between an NFPA® handbook and a code or standard? We’re glad you asked.

    NFPA codes and standards both provide requirements for achieving outcomes. Handbooks take a deeper dive, providing the full text of a code or standard as well as expert commentary and features such as graphics, decision trees, testing procedures, case studies, sample forms and checklists, and other helpful aids to give a better understanding of the reasoning behind the requirements and how to apply them.

    JUST REMEMBER:

    • A code or standard is a framework—a set of rules to follow with a goal to achieve a certain result
    • A handbook is a connector—linking requirements to application by helping you understand the reasoning behind a code or standard

    The simplest way to think about it is that codes and standards list the technical requirements while handbooks explain those requirements to clarify how to apply them.

  • Historical Editions

    Previous editions of NFPA® documents are available for sale. Please see applicable NFPA codes and standards product pages to confirm which editions are available for purchase. If you have any questions, contact NFPA Customer Support at 1-800-344-3555 or nfpa.org/customerservice.

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