Electrical

Question 1

Describe load shed on engine start

Answer 1

1) The #2 C Elec Hyd pump sheds with only one generator and all of the other 3 ELEC HYD pumps operating

2) The L Elec Dem Pump sheds on the ground during engine start with only one generator

3) C Tank Fuel Pumps (if installed) are inhibited any time engine N2 is less than 50% N1

4) The Utility Busses are shed during engine start when the APU is supplying both electrics and air. Only the utility bus powered by the APU will shed.