NCCER Electrical LV 1 MODULE 9 Conductors and Cables Exam Questions and Answers
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Course
NCCER Electrical
Institution
NCCER Electrical
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 circula...
NCCER Electrical LV 1 MODULE 9
Conductors and Cables Exam Questions
and Answers
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
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