Electrical

Question 1

Power hierarchy:
AC BUS 1:

Answer 1

-Gen 1
-APU Gen
- External B
-External A
-Gen 2

Question 2

AC BUS 2 power hierarchy:

Answer 2

• Gen 2
• External A
  -APU Gen
  -External B
  -Gen 1

Question 3

When External A “Avail”

Answer 3

-GND SRV bus is powered
-PB selected ON, external power is connected to rest of the system based on power hierarchy.