NFPA 110 PDF

Highlights

The 2025 edition features several updates, including:
The concept of reliability-centered maintenance (RCM)
New annex material on RCM program adoption considerations
Added clarification on the differences between maintenance free and non-maintenance-free batteries
Added guidance on available testing procedures for batteries

Table of Contents

NFPA® 110 Standard for Emergency and Standby Power Systems 2025 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