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Extra info for Standard for the Installation of Stationary Pumps for Fire Protection
2 and shall be permitted to be installed in accordance with NFPA 70. 3 are met, the voltage at the controller line terminals shall not drop more than 15 percent below normal (controller-rated voltage) under motor-starting conditions. 1 shall not apply to emergencyrun mechanical starting. 3), provided a successful start can be demonstrated on the standby gen-set. 4 The voltage at the contactor(s) load terminals to which the motor is connected shall not drop more than 5 percent below the voltage rating of the motor when the motor is operating at 115 percent of the full-load current rating of the motor.
3 For installations in a wet pit, this suction strainer shall be required in addition to the intake screen. (See Figure A. 5 Fittings. 2 Automatic Air Release. 5 in. (38 mm) pipe size or larger automatic air release valve shall be provided to vent air from the column and the discharge head upon the starting of the pump. 2 This valve shall also admit air to the column to dissipate the vacuum upon stopping of the pump. 3 This valve shall be located at the highest point in the discharge line between the fire pump and the discharge check valve.
2(5) for the normal source of power, no more than one disconnecting means and associated overcurrent protection device shall be installed in the power supply to the fire pump controller. 3 is installed, the disconnecting means shall meet all of the following requirements: It shall be identified as being suitable for use as service equipment. (2) It shall be lockable in both the closed position and the open position. (3)* It shall be located remote from other building disconnecting means. (4) * It shall be located remote from other fire pump source disconnecting means.