What is the minimum size of a grounding electrode conductor when using a ground ring electrode that is 2 AWG?

The minimum size of a grounding electrode conductor used with a ground ring electrode that is 2 AWG is indeed 2 AWG. This requirement maintains the integrity and effectiveness of the grounding system. The grounding electrode conductor must be sized adequately to handle fault currents without overheating, ensuring that it can safely carry the electrical surge to the grounding system without failure.

In this scenario, since the ground ring electrode itself is 2 AWG, the grounding electrode conductor must meet or exceed this size designation per the applicable electrical codes and standards, which emphasize matching or exceeding the size of the grounding electrode for reliable performance. By adhering to this guideline, the grounding system ensures that it can effectively safeguard equipment and personnel against electrical faults.