According to the ASTM Standard F855, what is the rating capacity for #2 AWG for a duration of 15 cycles?

The ASTM Standard F855 provides guidelines for the current-carrying capacity of electrical conductors, including specifications for different wire gauges and durations. For a #2 AWG conductor, the standard indicates that the rating capacity for a duration of 15 cycles is 18,000 amperes.

This high capacity is due to the specific physical and thermal properties of the #2 AWG wire, which can handle significant electrical loads for short durations, like 15 cycles, without exceeding temperature limits that could cause damage or failure. The standard takes into account the conductor's ability to dissipate heat generated by the electrical current flowing through it, ensuring safety and reliability in electrical systems.

Understanding the context of these ratings is important for designing electrical systems and ensuring that conductors are properly specified for the expected loads and operational conditions.