What is the total capacity of the receptacles when each is rated at 400 amps?

To determine the total capacity of the receptacles rated at 400 amps each, we need to consider how many receptacles there are in total. The correct choice, which states that the total capacity is 4,800 amps, implies there are 12 receptacles. This is calculated by multiplying the number of receptacles (12) by the rating of each receptacle (400 amps), which results in a total capacity of 4,800 amps (12 x 400 = 4,800).

Understanding the logic behind capacity calculation is essential in electrical theory and application, as it helps ensure that systems are designed to handle the expected load without risking overload or creating safety hazards.