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Refer to figure.
On ground, APU GEN can be used to feed the AC BUS 2, when: (NB: all contractors not mentioned are assumed to remain open)
  • A
    C2.1 and C2.2 are closed.
  • B
    C1.3 and C2.2 are closed.
  • C
    C1.1 and C2.1 are closed.
  • D
    C1.3 and C2.1 are closed.

Refer to figure.
AC BUS 2 can be fed by APU GEN while on the ground, when C1.3 and C2.2 are closed.

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