Test Conditions.
C. Test Conditions. The requirements regarding test conditions presented in section I.C of this appendix apply to this section III. When testing pumps using a calibrated motor the following conditions also apply to the mains power supplied to the motor:
(1) Maintain the voltage within ±5 percent of the rated value of the motor,
(2) Maintain the frequency within ±1 percent of the rated value of the motor,
(3) Maintain the voltage unbalance of the power supply within ±3 percent of the rated values of the motor, and
(2) Maintain total harmonic distortion below 12 percent throughout the test.