For a 115/230-V 1Ø motor, the smallest branch circuit conductors that can be installed are how many AWG?

For a 115/230-V single-phase motor application, the minimum size of branch circuit conductors is primarily determined by considering the load and the ampacity ratings according to the National Electrical Code (NEC). For small motors, branch circuit conductors must be adequately sized to handle the motor's starting current and the continuous load.

In this case, when determining the smallest branch circuit conductors for a 115/230-V motor, the typical requirement is to use conductors that can safely carry the required load while also considering factors like the distance from the power source, the type of insulation, and any derating factors associated with the installation conditions.

Conductors sized at 6 AWG can handle up to 65 amps, which makes them suitable for various single-phase motors, especially when taking into account both the running and starting currents that can be significantly higher at startup.

Choosing a size smaller than 6 AWG, such as 8 or 10 AWG, may not meet the load requirements, especially under high starting conditions, potentially leading to overheating or insufficient voltage delivery to the motor. Hence, 6 AWG is considered the smallest viable option for ensuring the safe operation of a 115/230-V single-phase motor while complying