Page Date: 20. April 2002 7 - 13
Section 7
Description and Operation of Aircraft and Systems
PilotĀ“s Operating Handbook
EXTRA 300L
A fuel filter with drain is installed between the fuel selector valve and the boost pump.
Separate drains are located at the lowest point of each tank system.
Normal float type transducers and electrically operated fuel indicators are used.
7.12 ELECTRICAL SYSTEM
The electrical system is supplied by a 12 V alternator with rectifier, transistor voltage
regulator. The alternator is mounted on and driven by the engine.
The field current is controlled by the voltage regulator to nominal 14 V under all load
conditions. The masterswitch is located on the rear instrument panel.
Circuit protection against overvoltage is provided by the voltage regulator.
The maximum load taken from the alternator is 40 amp.
A 12 V leak proof battery is connected across the alternator output to stabilize the supply
and to maintain all essential services in the event of an alternator failure and when the
engine is not operating. The battery is mounted behind the firewall.
All electrical circuits are protected by circuit breakers located on the rear instrument panel
and they are easily accessible to the pilot during flight.
The electrical system is adequately suppressed to ensure satisfactory operation of the radio
equipment.
All wires, switches, circuit breakers etc. are manufactured to related aeronautical
specifications.
Page Date: 15. December 2005
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