Fire Pump Motor Connection

When designing or installing electrical power supplies for fire pumps and their accessories you must apply special rules as listed in nfpa 70 the national electrical code nec and the standard for centrifugal fire pumps cfp nfpa 20.

Fire pump motor connection.

See figure 695 2 un695 02 695 07 01 cdr. The overcurrent devices may be set as normally required by the code nec table 450 3 a and table 450 3 b and must be set for indefinite time for lrc of all of the fire pump motors lrc of the jockey pump fla of the associated fire pump accessory equipment and 100 of the remaining loads. A 25 hp 208v 3 phase fire pump motor is 175 ft from the service. What size conductor must you install to the fire pump motor controller.

In this lesson we ll learn to read and interpret motor connection diagrams and determine the electrical relationship of the stator windings using motor conne. Terminals are rated 75ºc. Designing electrical systems for fire pumps since fire pumps are considered life safety equipment they must be reliable. The fire pump motor controller is 150 ft from the service.