NFPA 110: Standard for Emergency and Standby Power Systems
Current Edition: 2013 Next Edition: 2016

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NFPA 110:
2013 Edition
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What is NFPA 110?
NFPA 110: Document Scope
1.1 Scope. This standard covers performance requirements for emergency and standby power systems providing an alternate source of electrical power to loads in buildings and facilities in the event that the primary power source fails. 1.1.1 Power systems covered in this standard include power sources, transfer equipment, controls, supervisory equipment, and all related electrical and mechanical auxiliary and accessory equipment needed to supply electrical power to the load terminals of the transfer equipment. 1.1.2 This standard covers installation, maintenance, operation, and testing requirements as they pertain to the performance of the emergency power supply system (EPSS). 1.1.3 This standard does not cover the following: (1) Application of the EPSS (2) Emergency lighting unit equipment (3) Distribution wiring (4) Utility service when such service is permitted as the EPSS (5) Parameters for stored energy devices (6) The equipment of systems that are not classed as Level 1 or Level 2 systems in accordance with Chapter 4 of this standard 1.1.4* This standard does not establish criteria for stored energy systems. 1.1.5 The selection of any of the following is not within the scope of this standard: (1) Specific buildings or facilities, or both, requiring an EPSS (2) Specific loads to be served by the EPSS (3)*Assignment of type, class, or level to any specific load.
This standard covers performance requirements for emergency and standby power systems providing an alternate source of electrical power in buildings and facilities in the event that the normal electrical power source fails. Systems include power sources, transfer equipment, controls, supervisory equipment, and accessory equipment needed to supply electrical power to the selected circuits. Official document scope
What does NFPA 110 address?
NFPA 110 presents installation, maintenance, operation, and testing requirements as they pertain to the performance of the emergency or standby power supply system (EPSS) up to the load terminals of the transfer switch. Specific topics include definitions of the classification of EPSS; energy sources, converters, inverters, and accessories; transfer switches and protection; installation and environmental considerations; and routine maintenance and operational testing. Table of Contents

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