12.26.6(d) . releasing the starter once the engine is running; 

– always release the starter button or starter key from the START position once the engine is running

12.26.6(c) . avoiding prolonged operation of the starter motor; 

– starter motors draw a large current and place a large strain on the battery
– prolonged operation of the starter motor will flatten the battery.
– overheating of the starter motor can result from excessive prolonged use.

12.26.6(b) . starting with radios and other unnecessary equipment switched off; 

– do not start the engine with radios and other unnecessary equipment switched on
– causes large voltage fluctuations when the starter is engaged and may cause severe damage to sensitive electronic circuits

12.26.6(a) . avoiding continuous operation of high-power systems on the ground before start; 

– do not continuously operate electrical services which require airflow past them for cooling – eg during the pre-flight inspection
– excessive use of electrical services, eg fans, flaps, cabin lights etc , can discharge the battery and possibly make starting difficult.

12.26.6. Explain the precautions to take during normal operation of the electrical system,including: 

12.26.4(g) . fuses and circuit breakers. 

– these are provided to protect the equipment from any electrical current overload
– if there is electrical overload or short circuit – a fuse wire will melt or blow or a circuit breaker will pop
– prevent circuits from overheating, smoking , catching fire

12.26.4(f) . master switch and battery/alternator switches; 

– master switch controls all of the circuits in the aircraft electrical system
– must be ON for any of the elctrical services to receive power or for the battery to be recharged when the engine is running
–

12.26.4(e) . ammeter; 

– measures the amount of electric current in amperes (amps) flowing at a specific place within the circuit
– is a primary indicator of how well the electrical system is performing

12.26.4(d) . voltage regulator, voltmeter, or over voltage light; 

To control the generated voltage to ensure it doesn’t exceed that required by the aircraft system…
– generated voltage is controlled by the Voltage Regulator
– the Overvoltage Protector guards against the malfunction of the Voltage Regulator
– the Voltmeter indicates the voltage
– the Overvoltage Light also indicates the voltage

12.26.4(c) . bus bar; 

– a main conductor and distributor of electrical power
– electrical power is supplied to the bus bar by the alternator or generator and battery
– then directed to the circuits and electrical components that require power – – may be a metal bar