Protective Earth

A protective earth pin (PE) also known as the "ground" or "grounding" pin is a pin connector on charging cables for electric vehicles. They are one of five pins on a type 1 connector and one of seven pins on a type 2 connector.

How does the protective earth pin work?

The protective earth pin works by grounding (sending electricity to the earth) for safety in case of excess electrical discharge to prevent injury or fire.