Grounding equipment sizing requires what minimum ampacity?

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Multiple Choice

Grounding equipment sizing requires what minimum ampacity?

Explanation:
Grounding equipment must be sized to carry fault current safely until the protective device clears the fault. The size is determined by the overcurrent protection device rating, so the grounding path has enough ampacity to stay within safe temperature limits during a fault. In common practice, the minimum copper size that meets this requirement is 2 AWG, meaning a grounding conductor of 2 AWG or thicker is acceptable. Using a smaller conductor would not provide enough current-carrying capacity and could overheat before the fault is interrupted. Larger sizes would also satisfy the requirement but are not necessary to meet the minimum.

Grounding equipment must be sized to carry fault current safely until the protective device clears the fault. The size is determined by the overcurrent protection device rating, so the grounding path has enough ampacity to stay within safe temperature limits during a fault. In common practice, the minimum copper size that meets this requirement is 2 AWG, meaning a grounding conductor of 2 AWG or thicker is acceptable. Using a smaller conductor would not provide enough current-carrying capacity and could overheat before the fault is interrupted. Larger sizes would also satisfy the requirement but are not necessary to meet the minimum.

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