1 Scope

1.1 These requirements cover controllers intended for starting and stopping centrifugal fire pumps, including automatic and non-automatic types for electric motor or engine driven pumps in accordance with the Standard for the Installation of Stationary Pumps for Fire Protection, NFPA 20. Types of controllers covered include full service, limited service, high voltage and residential. Controllers may be provided with transfer switches. Controllers may be suitable for use as service equipment. This equipment is for use in ordinary locations in accordance with the National Electrical Code, ANSI/NFPA 70.

1.2 Controllers for electric motor driven, centrifugal fire pumps are intended for use with squirrel cage or wound rotor motors rated 600 V or less. Controllers for squirrel cage motors may be for across-the-line or reduced voltage starting. Limited service controllers are intended for across-the-line starting of squirrel cage motors rated 30 Hp or less, 600 V or less. High voltage controllers are intended for use with squirrel cage motors rated 2.2 - 7.2 kV AC. Residential fire pump controllers are intended for use with squirrel cage motors rated 250 V or less.

1.3 An automatic transfer switch intended to be used in fire pump circuits, that is provided separate from a controller is to be investigated in accordance with the appropriate Standard for Automatic Transfer Switches, UL 1008, and NFPA 20.