During normal operation, which buses are powered by No.1 inverter?

During normal operation, which buses are powered by No.1 inverter?

• A. Primary buses
• B. Secondary buses
• C. All listed buses
• D. Emergency bus

Answer: (C)

In this electrical layout, inverters feed the aircraft’s AC buses. The No.1 inverter is the main source for the essential AC distribution, so it powers the primary buses, the secondary buses, and the emergency bus during normal operation. This setup keeps critical avionics and emergency equipment energized without depending on other power paths. The No.2 inverter handles other, non-urgent loads, providing redundancy for the cabin and nonessential systems. So, No.1 inverter supplying all listed buses is why that option is correct.

In this electrical layout, inverters feed the aircraft’s AC buses. The No.1 inverter is the main source for the essential AC distribution, so it powers the primary buses, the secondary buses, and the emergency bus during normal operation. This setup keeps critical avionics and emergency equipment energized without depending on other power paths. The No.2 inverter handles other, non-urgent loads, providing redundancy for the cabin and nonessential systems. So, No.1 inverter supplying all listed buses is why that option is correct.