Heavier gauge wire is used for the ___ winding in a 1Ø motor.

In a single-phase (1Ø) motor, heavier gauge wire is primarily used for the run winding because this winding is responsible for carrying the continuous load current once the motor is up to speed. The run winding remains energized for most of the motor's operation, requiring it to handle higher temperatures and currents without overheating or degrading. Therefore, using a heavier gauge wire helps to reduce resistance, minimize power loss, and improve efficiency.

The start winding, on the other hand, is utilized only during motor startup and is typically a lighter gauge wire since it does not carry current continuously after the motor reaches its operational speed. The field winding may also not require heavier gauge wire, as it serves a different function, primarily producing the magnetic field necessary for motor operation. Meanwhile, the armature design can vary depending on the specific type of motor and application, but it typically benefits from heavier wire only when focusing on current loading rather than speed regulation.

Overall, the selection of wire gauge in motor windings is crucial in ensuring optimal performance and durability, particularly in the run winding where sustained electrical stresses are present.