What is the in-flight maximum electrical output for each TRU limited to?

The in-flight maximum electrical output for each Transformer Rectifier Unit (TRU) is indeed limited to 120 amps. This limitation is set to ensure the safety and reliability of the aircraft's electrical systems while in operation. The TRU is responsible for converting the aircraft's three-phase AC power into DC power, which is then distributed to various systems and components.

Maintaining a maximum output of 120 amps helps in preventing overload conditions that could lead to equipment failures or potential hazards during flight. Specifying this limit helps crew members plan their electrical load management effectively, ensuring that essential systems remain operational without exceeding the capacity of the TRUs. Understanding these limits is crucial for effective aircraft operations and to ensure compliance with safety regulations.