In a system with a one 5 hp motor and multiple smaller motors, what is the conductor size that ensures proper function?

To determine the proper conductor size for a system that includes a 5 hp motor along with multiple smaller motors, it's important to consider the motor's horsepower, starting currents, and the applicable National Electric Code (NEC) guidelines regarding conductor sizing.

A 5 hp motor typically requires a significant amount of current, particularly when starting. The NEC suggests that the conductor size should be chosen not only to safely carry the full load current but also to handle the inrush currents that occur during startup. Therefore, one key aspect is the use of the appropriate wire gauge to ensure safety and efficiency.

6 AWG conductor size is often considered suitable for motors up to 5 hp, as it can handle the full load currents effectively without excessive voltage drop or overheating. This is based on NEC guidelines that recommend specific wire sizes for different amperage requirements tied to motor applications.

Using 6 AWG ensures that the conductor can manage the electric load presented by the motor and any additional smaller motors in the system, promoting reliability and adherence to electrical safety standards. Conductor sizes larger than this, such as 2 AWG, 3 AWG, or 1 AWG, would typically be unnecessary for a system with a single 5 hp motor and might lead