How will an extremely dirty air filter affect the amp draw of a PSC centrifugal blower motor?

A) The fan motor current is not affected by the air filter.
B) It will cause the motor current to increase because it is working harder to move the air through the system.
C) The motor will begin to draw negative amps due to the magnetic-thermal motor winding reaction to the increased temperature caused by reduced airflow.
D) It will cause the motor current to decrease because the fan will be moving less air.


D

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