NEMA - IA 10005
Guide on the Selection of Isolating Switches and Breakers for Fire Pump Control Circuits for Different Classifications of Motor Efficiencies
active, Most Current
| Organization: | NEMA |
| Publication Date: | 1 January 2023 |
| Status: | active |
| Page Count: | 19 |
scope:
This guide is intended to explain the concepts of how the fire pump controller manufacturer selects breakers so as to avoid unwanted tripping in fire pump circuits.
It addresses fire pump installations outside of North America, where a UL Listed/FM Approved fire pump controller is combined with a fire pump motor that is not UL Listed, and where the locked rotor currents are higher than those specified in UL 1004-5, which can result in unwanted circuit breaker and isolating switch tripping.
Document History
IA 10005
January 1, 2023
Guide on the Selection of Isolating Switches and Breakers for Fire Pump Control Circuits for Different Classifications of Motor Efficiencies
This guide is intended to explain the concepts of how the fire pump controller manufacturer selects breakers so as to avoid unwanted tripping in fire pump circuits.
It addresses fire pump...