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Page 344

| Figure 17-13 Mechanism of another crossed-coil power factor meter (Courtesy, General Electric Co.) |

| registers enabling the display of several functions, including not only watt-hour consumption, but instantaneous demands, time of utilization rates, both daily and seasonal. Encoders permit consumer cooperation in advising when demands are exceeded, with possibilities of control of operation of equipment and appliances. They also bring closer the remote reading of meters via telephone or utility lines (Fig. 17-19C). |

| Watt-hour meters for measuring energy in two-phase and three-phase circuits operate on the same principle as the single-phase meter but may have |

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