Which requirement must be checked for the AC grounding conductor's pigtails according to standard?

The grounding conductor's pigtails must be checked for amperage rating to ensure they can safely carry any fault current without overheating or causing a fire hazard. In marine electrical systems, where conditions can be harsh and currents can fluctuate, it is critical that grounding conductors are appropriately rated to handle potential overloads or short circuits.

Each grounding pigtail must have sufficient capacity to accommodate any fault current that might occur, thus protecting equipment and personnel from electric shock or fire. This is particularly important for safety in AC installations, where grounding serves as a vital component of the overall electrical safety and integrity of the system.

While aspects like voltage compatibility, resistance limits, and conductivity performance are also essential considerations in electrical installations, they do not directly address the immediate safety concern presented by the current-carrying capacity of the grounding conductors. Evaluating the amperage rating ensures that the grounding system functions effectively under all expected electrical conditions.