6.11 electrical cables and connectors

Question 1

what must be payed attention to when manufacturing cables?

Answer 1

grate care must be taken
stringent tests

Question 2

why is weight and dimensions a requirement of cables?

Answer 2

because aircraft has miles of cables so small reductions = big savings

Question 3

what do cables have to be resistant to?

Answer 3

fluids

Question 4

wiring is needed in high fire risk areas so what is done?

Answer 4

protective covering should be self extinguishing material

Question 5

during changes in temperature changes the cables must remain what?

Answer 5

flexible

Question 6

what must cables have high resistance to?

Answer 6

abrasion

Question 7

cables should be what?

Answer 7

physically strong and easily workable

Question 8

what is wet arc tracking?

Answer 8

requirement formulated to assess resistance to failure or insulation damage and fluid contamination

Question 9

what are the electrical requirements of cables?

Answer 9

attention to providing a conductor with low volts and insulator with high insulation resistance

Question 10

what is the normal current rating of a cable?

Answer 10

amount of current it will carry without temps enough to cause insulation resistance

Question 11

how were earlier cables identified?

Answer 11

stamped on there outer sheath or color identification for current rating

Question 12

what is cable classification based on?

Answer 12

American wire gauge

Question 13

how are modern cables identified?

Answer 13

stamped on the outside

Question 14

what is taken in to account when choosing the size of the cable?

Answer 14

electrical loading
heat generated by neighboring cables
number of cables in looms
if cable is enclosed in free air
thermal conductivity

Question 15

what is a wire?

Answer 15

a isolate single solid conductor or standard conductor surrounded by insulation

Question 16

what can a wire be made out of?

Answer 16

copper or aluminum and usually has a protective layer on the outside

Question 17

why is aluminum and copper the chaise for wire?

Answer 17

low resistance and expellant conductivity

Question 18

are aluminum wires used a lot?

Answer 18

limited and whenever replacement is nessasey

Question 19

is their any speciation’s detailing aluminum is suitable for aviation use?

Answer 19

no

Question 20

what are the disadvantages of aluminum cables?

Answer 20

can only carry 2/3 of the weight of the same size of copper wire
can crystalize and break under vibration
can not be smaller than 8 gauge

Question 21

what is a cable?

Answer 21

two or more wires that are insulated separately within the same outer insulation