Exam (elaborations)
ELEC 3 MOD 2 CONDUCTOR SELECTION AND CALCULATIONS COMPLETE -26
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ELEC 3 MOD 2 CONDUCTOR SELECTION AND CALCULATIONS COMPLETE -26
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ELEC 3 MOD 2 CONDUCTOR SELECTION AND CALCULATIONSCOMPLETE #26
Solid - correct answer _____ wire is the least flexible for of a conductor and is merely
one strand of copper.
12.9 - correct answer the resistance of copper is __._ ohms
21.2 - correct answer the resistance of aluminum is __._ ohms
1.732 - correct answer the square root of 3 is _.___
Current - correct answer to calculate voltage drop you must know: the load _______ in
amperes
Length - correct answer to calculate voltage drop you must know the total _____ of
conductor
Copper aluminum - correct answer to calculate voltage drop you must know the type of
wire such as ______ or ________.
3 - correct answer the permissible voltage drop of branch circuit is _ %
5 - correct answer the permissible voltage drop of branch and feeder circuits is _ %
Overcurrent - correct answer in most cases, an ___________ device must be
connected at the point where the conductor to be protected receives its supply.
Grounded - correct answer in general a ________ conductor must have a white or gray
finish.
Temperature - correct answer the ampacities re subject to correction factors that must
be applied where the ambient ____________ for the conductor location exceeds 30°c
(86°f)
Orange - correct answer the high leg of a 120/240v grounded three-phase, four-wire
delta system must be marked with an ______ color for identification.
4/0 14 - correct answer the most common sizes used for light and power installations
range from _/_ to __ awg.
1/1000 - correct answer the mil is equal to _/____ of an inch, so it is small enough to
measure and express these sizes very accurately.
Square - correct answer for conductors such as busbars the ______ mil is used which is
a square that is 1/1000 on each side.
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