To power the essential bus from AC bus 2 due to a loss of AC bus 1, what pilot action is required?

The correct answer indicates that no action is required from the pilot because the system is designed to be automatic in this scenario. In the A320 aircraft, in the event of a loss of AC bus 1, the essential bus can automatically receive power from AC bus 2 without any pilot intervention. This feature is part of the aircraft’s redundancy design, ensuring that critical systems remain powered even if one source fails, enhancing the safety and reliability of the aircraft’s electrical system.

The automatic nature of this system allows pilots to focus on other aspects of flight and emergency management, reducing workload. The design incorporates fail-safe mechanisms to transition power sources seamlessly, thus preventing unnecessary complications during flight operations.

While certain actions might be necessary in other situations, such as manually configuring bus ties or disconnecting generators to manage power distribution in specific failure scenarios, those actions are not required in this particular case where the automatic transfer capability is in place.