T-6B Electrical System
T-6B Electrical SystemCreated:24 Aug 2015Updated:30 Aug 2015T6BDriver.com
Objectives Identify power sources of electrical system Understand electrical distribution within system Identify location and understand operation of circuit breaker panels(Utilize electrical system schematic while reviewing this slideshow)
References T-6B NATOPS Manual Section 1 Electrical Power Supply System Starter/GeneratorBatteryAuxiliary BatteryExternal PowerBus Tie Switch Section 5 Figure 5-1 Instrument MarkingsBattery/Starter LimitationsGenerator Limitations Section 8, Chapter 4 Visual Communications
Min 22v Ext PwrMin 23.5v Batt StartBattery(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchHotBatBusELTEmer FlapsRam Air ValveBat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarter/GeneratorStarterRelay(28v/300a hr)Electrical System OverviewEICASGen SwitchBus TieSwitchOPENChargeNORMLdg Gr ContFlap ContProp SysAil/El/Rud TrimBAT BUSFwdBatBusAux Battery(24v/5a hr)ONGEN BUSFwdGenBusAvionics MasterSwitchONChargeAftBatBusUFCPRH MFDSystem mainly a DC system System power supplied by Starter/Generator Battery allows for stored power and engine starts Auxiliary Battery utilized as emergency source of power Electric power distributed by numerous electrical bus &avionics bus (separated by battery or generator side) Ability to isolate generator side from battery sidethrough use of Bus TieBUS TIEGENIAC #1UFCPRH MFDPMUEDMStarterBoost PumpIgnition Air CondTADSpd BrkNWSEDMFuel BalFire Det #2AOA/Pitot/TAT HTAftGenBusOFFAux BatSwitchOFFBFICOM 2Fire Det #1AuxBatBusCTR MFDFwd AviBat BusFwd AviGen BusCTR MFDAft AviBat BusAft AviGen BusIAC #2LH MFDADCIRSCOM 1LH MFDEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceTCASRAD ALTDMEXPDR
Power Sources(Starter/Generator)ToBatInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsStarterRelayChargeBus TieSwitchOPEN 28V/300amp Location (28v/300a hr)Gen SwitchNORMChargeDual use system as starter or generatorStarter/GeneratorGENToBat Bus ToGen BusLeft side of engine accessory compartmentCooled by air intake duct routed from left side of engine cowl Primary aircraft power Generator Control Unit (GCU) Located in rear cockpit, under panel immediately aft of OBOGS regulatorKeeps generator output within system limitsToAux BatStarter/GeneratorStarter/GeneratorAir Intake Duct
Power Sources(Starter/Generator)ToBatInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsStarterRelayChargeBus TieSwitchOPENStarter/Generator(28v/300a hr)ToAux Bat ToGen BusGenerator needs to supply a minimum of 25V to charge batteryBus Tie Switch must be NORM (closed) to allow chargingAuxiliary Battery charging NORMToBat BusBattery charging Gen SwitchGENCharge Normally generator powers Fwd Bat Bus which in-turn charges Aux BatBus Tie Switch must be NORM (closed) to allow charging
Power Sources (Starter/Generator)Controls & Indicators Right Forward Switch Panel ToBatInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsStarterRelayEICASStarter/GeneratorBus TieSwitchOPENCharge (28v/300a hr)EICAS Gen SwitchGENNORMChargeGEN switch and GEN Reset button (both cockpits)Metal flap for turning off Bat & Gen togetherMagnetic switchSelecting GEN switch “ON” in one cockpit will de-energize/turn switch off inother cockpitReset button resets generator when generator malfunctionsToGen BusToBat BusToAux Bat Information sent to EICAS by EDMDisplays system volts and amps in environmental sectionPositive amps battery chargingColor codes for normal/caution/exceedanceA GEN CAS warning illuminates when generator inoperativeLimits Inflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 volts (notify mx if outside)If generator voltage is continuously below 25V battery power is degraded andland as soon as practicalGenerator SwitchAmps/Volts IndicationsEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceGenerator ResetButton
Power Sources(Battery)Min 22v Ext PwrMin 23.5v Batt StartBattery24V/42amp, lead-acid battery Located in left side of engine accessory compartment Provides power for engine starts Provides power to electrical system when generator failsToHot Bat Bus(24v/42a hr)Bat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarterRelayEICASStarter/GeneratorBus TieSwitchOPENCharge(28v/300a hr)NORMToGen BusToBat Bus Gen SwitchGENCharge Capable of powering entire system (except air conditioning)30 min of power with Bus Tie Switch “OPEN” (generator side de-energized)Battery charging Accomplished by generator or external powerGenerator needs to supply a minimum of 25V to charge batteryBus Tie Switch must be NORM (closed) to allow charging by generatorToAux BatBatteryEICAS Volts22vCaution29.5vNormal32.2vCaution Exceedance
Power Sources(Battery) Min 22v Ext PwrMin 23.5v Batt StartControls & Indicators Battery(24v/42a hr)Bat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarterRelayEICASStarter/GeneratorBus TieSwitchOPENChargeRight Forward Switch Panel ToHot Bat Bus(28v/300a hr)Gen Switch EICAS GENBAT switch for power application (both cockpits)Metal flap for turning off Bat & Gen togetherMagnetic switchSelecting BAT switch “ON” in one cockpit will de-energize/turn switch off inother cockpitDisplays system volts and amps in environmental sectionPositive amps battery chargingColor codes for normal/caution/exceedanceNORM ChargeToGen BusToBat BusLimits Do not connect external power below 22.0V23.5V minimum for engine start using battery startToAux BatBattery SwitchAmps/Volts IndicationsEICAS Volts22vCaution29.5vNormal32.2vCaution Exceedance
Power Sources(Auxiliary Battery)Min 22v Ext PwrMin 23.5v Batt StartBatteryToHot Bat Bus(24v/42a hr) 24V/5amp Located in left avionic compartment (left E-bay) CB on Battery CB Panel (front cockpit left side)Bat Switch Inflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarterRelayEICASStarter/GeneratorBus TieSwitchOPENCharge(28v/300a hr) When generator & battery fail, provides power to: Gen SwitchAux Bat will not charge if CB poppedBackup Flight Instruments (BFI)Com 2 (standby VHF)Fire detection loop #1GENNORMToGen BusToBat Bus Provides 30 minutes of power Auxiliary Battery charging ChargeNormally generator powers Bat Bus which in-turn charges Aux BatBus Tie Switch must be NORM (closed) to allow chargingAux BatteryBat CB Panel(24v/5a hr)ONAux BatSwitchOFFToAux Bat BusAux BatteryEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceAux Bat CB
Power Sources(Auxiliary Battery)Min 22v Ext PwrMin 23.5v Batt Start Battery(24v/42a hr)Controls & Indicators ToHot Bat Bus Bat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarterRelayEICASStarter/GeneratorBus TieSwitchOPENCharge(28v/300a hr)Gen SwitchRight Forward Switch Panel AUX BAT switch for power applicationFront cockpit onlySystem Test Panel Front cockpit onlyTests aux battery power levelHold switch for a minimum of 5 seconds ensuring light remains illuminatedGENNORMAux BatterySwitchToGen BusToBat BusChargeAux Battery(24v/5a hr)ONAux BatSwitchOFFAux BatteryTest LightToAux Bat BusEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceAux BatteryTest Switch
Power Sources(External Power)Min 22v Ext PwrMin 23.5v Batt StartBatteryTo Hot BatBus(24v/42a hr)Ext PwrBat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarterRelayEICASStarter/GeneratorBus TieSwitchOPENCharge(28v/300a hr)Gen Switch Located on left side, below left avionics bay door Controlled by BAT switch (must be on & minimum of 22V) Connects power to Fwd Bat Bus for distribution to electrical system Internal protection for over/under voltage (automatically disconnects from system)GENNORMToGen BusToBat BusExternal power visualsignalChargeAux Battery(24v/5a hr)External Ground Power ReceptacleONAux BatSwitchOFFToAux Bat BusEICAS Volts22vCaution29.5vNormal32.2vCaution Exceedance
Power Distribution(Basic Theory)Min 22v Ext PwrMin 23.5v Batt StartBatteryExt Pwr To Hot BatBus(24v/42a hr) Bat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarterRelayEICASStarter/GeneratorBus TieSwitchOPENChargeElectrical Bus Bar(28v/300a hr)Gen SwitchGENNORM Main way to mass distribute electricity in a systemPhysically a “bus” is a metal barPlace various systems on one or numerous electrical bus for ease of isolation or electricalloadingCircuit Breaker (CB) Electrical Bus BarPlaced between electrical bus and equipment wired to busPrevents to much current (amps) from damaging equipmentNumber on CB indicates max amperage at which CB will “pop”ToGen BusToBat BusCB “popped”ChargeAux Battery(24v/5a hr)ONAux BatSwitchOFFToAux Bat BusEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceCB not “popped”
Power Distribution(Circuit Breaker Panels)Min 22v Ext PwrMin 23.5v Batt StartBatteryTo Hot BatBus(24v/42a hr)Ext PwrBat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarterRelayEICASStarter/GeneratorBus TieSwitchOPENCharge(28v/300a hr)Gen SwitchGENNORMToGen BusToBat BusGenerator CB PanelChargeAux Battery(24v/5a hr)ONAux BatSwitchOFFToAux Bat BusBattery CB PanelEICAS Volts22vCaution29.5vNormal32.2vCaution Exceedance
Power Distribution(Hot Battery Bus)Min 22v Ext PwrMin 23.5v Batt StartHotBatBusBattery(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchELTEmer FlapsRam Air ValveBat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarterRelayEICASStarter/GeneratorBus TieSwitchOPENCharge(28v/300a hr) Bus has power anytime the Battery is connected and has voltage Items on the bus are considered essential to always have power Circuit breakers in left side of accessory compartment above BatteryGen SwitchGENNORMToGen BusToBat BusChargeAux BatteryHot Bat Bus CB(24v/5a hr)ONAux BatSwitchOFFToAux Bat BusEICAS Volts22vCaution29.5vNormal32.2vCaution Exceedance
Power Distribution(Forward Generator Bus)Min 22v Ext PwrMin 23.5v Batt Start(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchHotBatBusBattery ELTEmer FlapsRam Air Valve Bat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 a hr)Gen SwitchBus TieSwitchOPENChargeBUS TIEGENNORMGEN BUSToBat BusFwdGenBusAir CondTADSpd BrkNWSEDMFuel BalFire Det #2AOA/Pitot/TAT HTForward Gen Bus Powered when GEN switch placed ONPowers various systems (air conditioning being highest power consumption)A GEN BUS CAS warning illuminates when Fwd Gen Bus inoperativeBus Tie Switch on right forward switch panel (front cockpit only)Allows Generator to power battery bus side of electrical systemNORM position closes relayA BUS TIE CAS caution illuminates when Bus Tie is open or inoperative Generator & Battery Bus are isolated from each otherBat/Aux Bat will not be chargedChargeAux Battery(24v/5a hr)ONAux BatSwitchOFFToAux Bat BusEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceBus Tie Switch
Power Distribution (Forward Battery Bus)Min 22v Ext PwrMin 23.5v Batt Start(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchHotBatBusBatteryELTEmer FlapsRam Air Valve Inflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsStarter/GeneratorStarterRelayEICAS(28v/300a hr) BUS TIEGENNORMIAC #1UFCPRH MFDPMUEDMStarterBoost PumpIgnitionLdg Gr ContFlap ContProp SysAil/El/Rud TrimFwdBatBusBAT BUSStart up: IAC #1/RH MFD (to get EICAS display) & UFCP (radios)Eng Start: Starter/Boost Pump/Ignition/PMU/EDMFlight: Landing Gear Control/Flap Control/Prop System/TrimGenerator charges Aux Bat via the Fwd Bat BusGenerator or Battery powers Aux Bat Bus via the Fwd Bat BusA BAT BUS CAS warning illuminates when Fwd Bat Bus inoperative or when bus voltage dropsbelow 11.8VGen SwitchBus TieSwitchOPENChargeNormally powered by Generator thru Bus TieCan also be powered by Battery (if Generator failure)Powers some important but basic systems Bat SwitchBATForward Battery BusGEN BUSChargeFwdGenBusAir CondTADSpd BrkNWSEDMFuel BalFire Det #2AOA/Pitot/TAT HTAuxiliary Battery Bus Critical items for continued flight during emergencies CB section labeled “STANBY” on Battery CB Panel to isolate bus items & Aft Aux BusNormally powered by Generator or Battery via the Fwd Bat BusPowered by Aux Bat in emergency Aux Battery(24v/5a hr)Backup Flight Instruments (BFI)Com 2 (standby VHF)Fire detection loop #1Gen & Bat inoperativeAUX BAT switch ON30 min of power (time dependent on amount of radio transmissions)ONBat CB PanelAux BatSwitchOFFBFICOM 2Fire Det #1AuxBatBusEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceAux Bat Bus Items
Power Distribution(Aft Generator & Battery Bus)Min 22v Ext PwrMin 23.5v Batt StartBattery(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchHotBatBusGen CB PanelELTEmer FlapsRam Air Valve Bat Switch Inflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 a hr)Powered by Fwd Gen BusCB on Gen CB PanelCan isolate aft bus from front cockpit if single-pilotGen SwitchBus TieSwitchOPENChargeAft Generator BusBUS TIEGENNORMIAC #1UFCPRH MFDPMUEDMStarterBoost PumpIgnitionLdg Gr ContFlap ContProp SysAil/El/Rud TrimFwdBatBusBAT BUSGEN BUSFwdGenBusChargeAux Battery(24v/5a hr)ONAftBatBusUFCPRH MFDAftGenBusAir CondTADSpd BrkNWSEDMFuel BalFire Det #2AOA/Pitot/TAT HTAft Gen Bus CB Aft Battery Bus Powered by Fwd Bat BusCB on Bat CB PanelPowers RH MFD & UFCP for rear cockpitCan isolate aft bus from front cockpit if single-pilotAux BatSwitchBat CB PanelOFFBFICOM 2Fire Det #1AuxBatBusAft Bat Bus CBEICAS Volts22vCaution29.5vNormal32.2vCaution Exceedance
Power Distribution(Avionics)Min 22v Ext PwrMin 23.5v Batt Start(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchHotBatBusBatteryELTEmer FlapsRam Air Valve Bat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBAT(28v/300a hr)On front right switch panel (front cockpit only)De-energizes avionics relays (relays close) allowing power to avionics buses Gen SwitchBus TieSwitchOPENCharge Starter/GeneratorStarterRelayEICASAvionics Master SwitchFwd Bat Bus powers Fwd Avi Bat BusFwd Gen Bus powers Fwd Avi Gen BusCircuit Breaker On Bat CB PanelIf CB pops, relays de-energized and close, turning on avionics regardless of switch positionBUS TIEGENNORMIAC #1UFCPRH MFDPMUEDMStarterBoost PumpIgnitionLdg Gr ContFlap ContProp SysAil/El/Rud TrimFwdBatBusBAT BUS(24v/5a hr)ONFwdGenBusAvionics MasterSwitchONChargeAux BatteryGEN BUSAftBatBusUFCPRH MFDAir CondTADSpd BrkNWSEDMFuel BalFire Det #2AOA/Pitot/TAT HTAftGenBusOFFBat CB PanelAux BatSwitchOFFBFICOM 2Fire Det #1ToAvi Bat BusAuxBatBusToAvi Gn BusAvionics MasterSwitchEICAS Volts22vCaution29.5vNormalAvi Master CB32.2vCaution Exceedance
Power Distribution(Forward Avi Generator Bus)Min 22v Ext PwrMin 23.5v Batt Start(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchHotBatBusBatteryELTEmer FlapsRam Air ValveInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarter/GeneratorStarterRelayEICASGen SwitchBUS TIEGENNORMLdg Gr ContFlap ContProp SysAil/El/Rud TrimFwdBatBusBAT BUS(24v/5a hr)ONGEN BUSFwdGenBusAvionics MasterSwitchONChargeAux BatteryPowered by Fwd Gen Bus Powers important avionics items critical for instrument flight Circuit Breakers(28v/300a hr)Bus TieSwitchOPENChargeIAC #1UFCPRH MFDPMUEDMStarterBoost PumpIgnition Bat SwitchAftBatBusUFCPRH MFD Air CondTADSpd BrkNWSEDMFuel BalFire Det #2AOA/Pitot/TAT HTAftGenBusOFFCBs on Gen CB PanelIndividual CBs for itemsOne CB for entire bus isolationGen CB PanelAux BatSwitchOFFBFICOM 2Fire Det #1Fwd AviGen BusAuxBatBusEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceIAC #2LH MFDADCIRSCOM 1Fwd Avi Gen Bus CBTCASRAD ALTDMEXPDRFwd Avi Gen Bus(individual items)
Power Distribution(Aft Avi Generator Bus)Min 22v Ext PwrMin 23.5v Batt Start(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchHotBatBusBatteryELTEmer FlapsRam Air Valve Powered by Fwd Avi Gen Bus Powers LH MFD in aft cockpit Circuit BreakersBat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 a hr)Gen SwitchBus TieSwitchOPENChargeBUS TIE CB on Gen CB PanelCan isolate aft bus from front cockpit if single-pilotGENNORMIAC #1UFCPRH MFDPMUEDMStarterBoost PumpIgnitionLdg Gr ContFlap ContProp SysAil/El/Rud TrimFwdBatBusBAT BUS(24v/5a hr)ONFwdGenBusAvionics MasterSwitchONChargeAux BatteryGEN BUSAftBatBusUFCPRH MFDAir CondTADSpd BrkNWSEDMFuel BalFire Det #2AOA/Pitot/TAT HTAftGenBusOFFGen CB PanelAux BatSwitchOFFBFICOM 2Fire Det #1Fwd AviGen BusAuxBatBusAft AviGen BusEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceIAC #2LH MFDADCIRSCOM 1LH MFDTCASRAD ALTDMEXPDRAft Avi Gen Bus CB
Power Distribution(Forward Avi Battery Bus)Min 22v Ext PwrMin 23.5v Batt Start(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchHotBatBusBatteryELTEmer FlapsRam Air ValveInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 voltsBATStarter/GeneratorStarterRelayEICASGen SwitchBUS TIEGENNORMLdg Gr ContFlap ContProp SysAil/El/Rud TrimBAT BUSFwdBatBus(24v/5a hr)ONGEN BUSFwdGenBusAvionics MasterSwitchONChargeAux BatteryPowered by Fwd Bat Bus Powers Ctr MFD in front cockpit Circuit Breakers(28v/300a hr)Bus TieSwitchOPENChargeIAC #1UFCPRH MFDPMUEDMStarterBoost PumpIgnition Bat SwitchAftBatBusUFCPRH MFD Air CondTADSpd BrkNWSEDMFuel BalFire Det #2AOA/Pitot/TAT HTAftGenBusOFFCBs on Bat CB PanelIndividual CBs for itemOne CB for entire bus isolationBat CB PanelAux BatSwitchOFFBFICOM 2Fire Det #1AuxBatBusCTR MFDFwd AviBat BusFwd AviGen BusAft AviGen BusEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceIAC #2LH MFDADCIRSCOM 1TCASRAD ALTDMEXPDRLH MFDFwd Avi Bat Bus(individual items)Fwd Avi Bat Bus CB
Power Distribution(Aft Avi Battery Bus)Min 22v Ext PwrMin 23.5v Batt Start(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchHotBatBusBatteryELTEmer FlapsRam Air Valve Powered by Fwd Avi Gen Bus Powers Ctr MFD in aft cockpit Circuit BreakersBat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 a hr)Gen SwitchBus TieSwitchOPENChargeBUS TIE CB on Bat CB PanelCan isolate aft bus from front cockpit if single-pilotGENNORMIAC #1UFCPRH MFDPMUEDMStarterBoost PumpIgnitionLdg Gr ContFlap ContProp SysAil/El/Rud TrimBAT BUSFwdBatBus(24v/5a hr)ONFwdGenBusAvionics MasterSwitchONChargeAux BatteryGEN BUSAftBatBusUFCPRH MFDAir CondTADSpd BrkNWSEDMFuel BalFire Det #2AOA/Pitot/TAT HTAftGenBusOFFBat CB PanelAux BatSwitchOFFBFICOM 2Fire Det #1AuxBatBusCTR MFDFwd AviBat BusFwd AviGen BusCTR MFDAft AviBat BusAft AviGen BusEICAS Volts22vCaution29.5vNormalIAC #2LH MFDADCIRSCOM 1TCASRAD ALTDMEXPDRLH MFDAft Avi Bat Bus CB32.2vCaution Exceedance
Power Distribution Aircraft made to fly single pilot from front cockpit so need the ability to isolatevarious equipment and buses from front cockpit Battery CB Panel has:(Circuit Breaker Review)Min 22v Ext PwrMin 23.5v Batt StartBattery(24v/42a hr)Ext PwrClockChip DetectOBOGSFDR MxBatt SwitchHotBatBusELTEmer FlapsRam Air Valve Bat SwitchInflight: 50 to -2 ampsGround/Inflight: 28.0 to 28.5 a hr)(individual item CBs)(Bus CB)(individual item CBs)(Bus CB)(Bus CB & individual item CBs)(Bus CB)Bat CB PanelGen SwitchBus TieSwitchOPENChargeFwd Bat BusAft Bat BusAux Bat BusAft Aux Bat BusFwd Avi Bat BusAft Avi Bat BusBUS TIEGENNORMIAC #1UFCPRH MFDPMUEDMStarterBoost PumpIgnitionLdg Gr ContFlap ContProp SysAil/El/Rud TrimBAT BUSFwdBatBus(24v/5a hr)ONFwdGenBusAvionics MasterSwitchONChargeAux BatteryGEN BUSAftBatBusUFCPRH MFDAir CondTADSpd BrkNWSEDMFuel BalFire Det #2AOA/Pitot/TAT HTAftGenBusOFFAux BatSwitchOFFBFICOM 2Fire Det #1AuxBatBusCTR MFDFwd AviBat BusFwd AviGen BusCTR MFDAft AviBat BusAft AviGen BusEICAS Volts22vCaution29.5vNormal32.2vCaution ExceedanceIAC #2LH MFDADCIRSCOM 1LH MFDTCASRAD ALTDMEXPDR Generator CB Panel has: Fwd Gen BusAft Gen BusFwd Avi Gen BusAft Avi Gen Bus(indivi
Inflight: 50 to -2 amps Ground/Inflight: 28.0 to 28.5 volts Battery charging Generator needs to supply a minimum of 25V to charge battery Bus Tie Switch must be NORM (closed) to allow charging Auxiliary Battery charging Normally g
Electrical Infrastructure includes an electrical installation, electrical equipment, electrical line or associated equipment for an electrical line. 1.9 Electrical installation As per the Electrical Safety Act 2002 (s15) (a) An electrical installation is a group of items of electrical equipment that—
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positive. The unit of electrical charge is the coulomb (symbol: C). Electrical current An electrical current is the movement of negative electrical charges (electrons) through a conductor (electrical wire, metal foil, etc.). In an electrical circuit, the current flows from the point where the electrical potential is highest to the point where .
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The Electrical Specialty Code (OESC) applies to all nonexempt electrical installations except as covered by the electrical provisions of the Oregon Residential Specialty Code and is inspected by an Electrical Specialty Code inspector. OAR 918-305-0020 Governing Codes The applicable Electrical Specialty Code for electrical
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practicable. There are four electrical safety codes of practice: 1. Electrical safety code of practice 2013 - Managing electrical risks in the workplace 2. Electrical safety code of practice 2020 - Electrical equipment rural industry 3. Electrical safety code of practice 2020 - Working near overhead and underground electric lines 4.
