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- Dec 25, 2011
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Actually, most dual-voltage machines have two field run windings that are connected in parallel for low voltage and series for high voltage. The wattage consumed for a given load is the same regardless of which way the motor is connected. The difference in copper losses is all external to the motor.
Also, not that it is germane to power consumption, but in either all or almost all single phase dual voltage capacitor start motors, there is only a single Start winding wound for the lower voltage (usually 110/115/117/120 VAC (depending upon the year of manufacture) and it is connected Line to Neutral regardless of which voltage the motor is connected for.
Also, not that it is germane to power consumption, but in either all or almost all single phase dual voltage capacitor start motors, there is only a single Start winding wound for the lower voltage (usually 110/115/117/120 VAC (depending upon the year of manufacture) and it is connected Line to Neutral regardless of which voltage the motor is connected for.
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