Monthly Archives: June 2022

Special Rules for Electric Motor Fire Pump Controllers

Electric motor fire pump controllers are different from many traditional motor controllers in the world.  The major difference is that, with some special exceptions, there are no thermal overloads in the controller or devices designed to protect the motor by shutting off the power circuit.  With fire pumps, since they provide such a crucial property and life-saving purpose, they are designed to keep power to the fire pump, even if the motor literally burns up.  The fire protection and insurance industries figure that the building property and life being protected is more important than protecting a fire pump motor.  In that regard, they are correct and have their priorities straight.

UL/FM fire pump controllers, or “listed” fire pump controllers, are guided by requirements in NFPA 20 and NEC regarding their components, as well as considerations for their installation.  Most fire pump Continue reading