Nccer Electrical Lv 1 Module 9
Conductors And Cables Questions And
Answers With Verified Solutions Already
Passed!!!
The slandered system of wire sizes in the United Stated is known as the _______. -
ANSWER✔✔American Wire Gauge (AWG) system
Wire sizes of No._ or larger are shown only as stranded. - ANSWER✔✔No.6
The purpose of stranding is to increase ________. - ANSWER✔✔The Flexibility
of the wire
A circular mil is a circle that has a diameter of ______. - ANSWER✔✔1 mil
A mil is ____. - ANSWER✔✔0.001 inch
Aluminum conductors have a _______. - ANSWER✔✔Higher resistance
The conductivity of aluminum is approximately ______ that of copper. -
ANSWER✔✔2/3
The grounding conductor may be _____. - ANSWER✔✔bare, green, or green with
a yellow stripe
Type NM and Type NMC is widely used for ______ - ANSWER✔✔branch
circuits and feeders in residential and commercial systems.
, What is Romex Cable? - ANSWER✔✔Nonmetallic sheathed cable consists of two
or more plastic-insulated conductors and ground wire surrounded by a moisture
resistant plastic jacket. Can be used in wood stud residential buildings and
buildings not exceeding three stories (as long as it is used and protected with wood
studs).
If a conductor has a low resistance, it _______. - ANSWER✔✔has a high
conductivity
Telephone wiring in a plenum space is likely to use _______. -
ANSWER✔✔Teflon insulation
Using NEC Table 402.5, the allowable ampacity of No.14 AWG fixture wire is
___. - ANSWER✔✔17 amps
The temperature rating of services rating of service-entrance cable when the cable
is not marked otherwise is_____. - ANSWER✔✔75 degrees Cel(167 degrees
Fharen)
Which of the following is the most common type of jacket? -
ANSWER✔✔Polyethylene
Which of the following is true when pulling conductors? - ANSWER✔✔If a pull is
expected to be difficult, a pull line should be used rather than a fish tape.
Large conductors are likely to require the use of _____. -
ANSWER✔✔Electrically driven power pullers.
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