What type of system is mandated for shock protection in EVSE installations?

The correct answer is that a listed system is mandated for shock protection in Electric Vehicle Supply Equipment (EVSE) installations. A listed system refers to equipment that has been tested and certified by a recognized testing laboratory to meet specific safety standards. This ensures that the equipment used in EVSE installations adheres to strict guidelines designed to prevent electrical shock hazards, thereby providing a significant layer of protection for users and maintaining overall safety during the charging process.

The importance of a listed system lies in the assurance that the materials and designs have undergone rigorous testing to evaluate their performance under various conditions. This includes testing for durability, thermal performance, and the ability to handle electrical faults without creating unsafe conditions. Utilizing listed equipment helps to prevent potential risks associated with electric shock, making it a critical requirement in EVSE installations.

While options such as unlisted, emergency, and standardized systems may relate to safety in some contexts, they do not specifically refer to the rigor of testing and certification associated with listed systems. Therefore, only the listed systems provide the regulatory compliance and proven safety necessary for shock protection in the context of EV charging infrastructure.