Which of the following is NOT provided by the ac grounding electrode system?

The grounding electrode system does provide a zero-volt earth reference for the AC power system by establishing the neutral-to-earth bond at the service entrance.

The grounding electrode system does provide a conductive path for dissipating electrical fault current safely into the earth.

The grounding electrode system does provide a low-impedance path for dissipating electrostatic discharge (ESD) to earth potential.

Adequate protection for people and equipment requires additional devices beyond the grounding electrode system, such as overcurrent protection (circuit breakers and fuses), ground fault circuit interrupters (GFCIs), and surge protective devices (SPDs). The grounding electrode system's defined roles under NEC Article 250 are to limit voltage imposed by lightning and line surges, stabilize the voltage-to-earth reference, and provide a fault current path to earth - not to independently guarantee safety for all personnel and equipment scenarios.