Avionics Electrical Wiring Standards

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What is a critical factor in determining the wire size for an electrical circuit?

The color of the wire insulation

The type of connector used

The estimated or measured conductor temperature (correct)

The length of the cable in meters

What is the primary purpose of crimping in electrical cables?

To secure the wire to the connector (correct)

To increase the current carrying capacity

To reduce the voltage drop

To reduce the wire length

What is the significance of high tension cables in aircraft electrical systems?

They are used for audio signals

They are used for power distribution only

They are used for low voltage applications

They are used for high voltage applications (correct)

What is the purpose of wire bundling in electrical circuits?

To organize and protect the wires Signup and view all the answers

What is the significance of derating in wire selection?

It accounts for the reduction in current carrying capacity due to environmental factors Signup and view all the answers

What is the maximum operating temperature that electrical cables should be designed to withstand?

Depends on the specific application Signup and view all the answers

What is the primary purpose of considering wire size in electric power transmission?

To minimize electrical energy converted into heat Signup and view all the answers

What happens when current is drawn through an insulated conductor?

The heat generated is not so readily removed Signup and view all the answers

Why is wire derating necessary when wires are installed in conduit and/or bundle?

Because the heat generated in the conductor is not so readily removed Signup and view all the answers

What is the effect of a wide variation in the IR drop in the line?

Poor voltage regulation at the load Signup and view all the answers

What is the purpose of reducing either current or resistance in wire size selection?

To reduce the power loss in the line Signup and view all the answers

What is the range of typical wire sizes?

From number 40 to number 0000 Signup and view all the answers

What is the primary reason to limit the current through a conductor?

To protect the insulation from excessive heat Signup and view all the answers

What is a consideration when selecting wire sizes smaller than #20?

The mechanical strength and installation handling Signup and view all the answers

Why should wires smaller than size #20 be grouped with at least three other wires?

To reduce the effects of vibration and flexing Signup and view all the answers

What is the relationship between the current carrying capacity of a wire and the related connector?

The wire may be capable of carrying more current than the contacts of the related connector Signup and view all the answers

What is the maximum operating temperature of a wire determined by?

The type of conductor insulation being used Signup and view all the answers

What should not be exceeded when operating a wire?

The current that causes a temperature steady state condition Signup and view all the answers

Avionics Electrical Wiring Standards

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