PART I-DESCRIPTIVE

     (ii)  Control of the battery is effected by a battery
           isolating switch (30) on the starter panel. If a crash
           occurs, an inertia switch de-energizes the battery
           isolating relay and automatically isolates the battery
           and at the sane time energizes the generator field
           isolation relay which de-energizes the field circuits of
           both generators. (See para. 13(d).)

    (iii)  There are no circuit breakers in the cockpit: they
           are either in the nose of the aircraft or in the fuel
           tank bay.

     (iv)  The ground supply plug is on a recessed panel
           covered by a removeable door under the port wing
           fillet. This supply point is for testing and servicing,
           but if an external ground battery is used for starting,
           the battery isolation switch should be set to ON
           before the ground supply is disconnected.

      (b)  A.C. supply

      (i)  A.C. for the Mk.4F compass, the artificial horizon
           and reheat top temperature limiter is supplied by
           two inverters. No. 1 inverter, controlled by the
           starter master switch,  normally supplies the flight
           instruments and top temperature limiter. No. 2
           inverter, controlled by the ignition switch acts as a
           standby to No. 1 inverter.

     (ii)  If No. 1 inverter fails, automatic changeover to No.
           2 inverter occurs. (38)

    (iii)  Circuit breakers for No. 1 and No. 2 inverter
           supplies are in the port and starboard sides of the
           nosewheel bay respectively, together with an
           indicator which shows white if inverter changeover
           has occurred during flight. None of these is access-
           ible in flight.

     (iv)  The A.C. supply for the guns is automatically
           supplied by a third inverter.

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