What is the minimum size copper equipment grounding conductor required for a Level II EVSE rated at 32 amperes at 208 volts?

In determining the minimum size of the copper equipment grounding conductor required for a Level II Electric Vehicle Supply Equipment (EVSE) rated at 32 amperes at 208 volts, it is essential to refer to the National Electrical Code (NEC) guidelines. For circuits rated 32 amperes, the NEC stipulates specific requirements for grounding conductors to ensure safety and compliance.

According to the NEC, the size of the grounding conductor is influenced by the overcurrent protection and the size of the connected circuit conductors. For a circuit rated at 32 amperes, the code typically requires a minimum of a 10 AWG copper grounding conductor. The use of a 10 AWG conductor provides adequate protection without being excessively large, which maintains a balance of safety, functionality, and compliance with electrical codes.

This grounding conductor serves as a critical safety component, ensuring that any faults in the circuit can safely redirect electricity to ground, reducing the risk of electric shock or fire. Therefore, a 10 AWG copper equipment grounding conductor is appropriate for a Level II EVSE rated at 32 amperes at 208 volts.