In a split-phase motor, which of the following are the two windings called?

In a split-phase motor, the two windings are correctly referred to as the start winding and the run winding. This terminology is used because each winding serves a specific function in the operation of the motor. The start winding is designed to create a phase shift in the current, allowing for the development of a rotating magnetic field that initiates the motor's rotation. This winding is typically used only during the startup phase of the motor, providing the necessary torque to overcome inertia.

Once the motor reaches a certain speed, the centrifugal switch or relay typically disconnects the start winding from the circuit, allowing the run winding to take over. The run winding operates continuously while the motor is running, providing the necessary torque for sustained operation. The distinction between these two windings is crucial for ensuring efficient motor performance and preventing overheating or damage.

Other terms like starting coil and running coil or phase winding and main winding may convey the function of the windings but do not reflect the commonly accepted terminology used in the industry. Similarly, initial winding and continuous winding are not standard terms used to describe the function of the two windings in a split-phase motor. Understanding the correct nomenclature is important for effective communication and technical discussions in the field of motor operation.