NCCER ELECTRICAL BOOK ONE CHAPTER:
CONDUCTORS AND CABLES
Which of the following is true of shielding in instrumentation circuits? - Correct Answers
-It is grounded only at one end only.
It is important to do which of the following when conductors are fed into long runs of
conduit? - Correct Answers -Make sure wires are straight and do not cross over each
other.
Size 4/0 wire has a ______. - Correct Answers -greater cross-sectional area than size
3/0
Which of the following increases the flexibility of a wire? - Correct Answers -Stranding
Which of the following describes type TC Cable? - Correct Answers -It consists of two or
more insulated conductor twisted together and covered with a nonmetallic jacket.
In addition to being both flame-retardant and moisture-resistant, what characteristics
does Type NMC cable have? - Correct Answers -It is fungus and corrosion resistant
Where can yo find the ampacity of conductors for given conditions? - Correct Answers -
NEC Tables 310.15(B)(16) through 310.15(B)(21)
Type NMS cable is described as _____. - Correct Answers -nonmetallic-sheathed cable
Which of the following types of cable may be installed in concealed locations? - Correct
Answers -Type NM and type NMC
A ground wire may be which of the following colors - Correct Answers -Green
Which types of cables are suitable for direct burial? - Correct Answers -Type UF
The operating temperature is a primary factor in the selection of a ___________. -
Correct Answers -Fixture wire
Which of the following is not shown with cable markings? - Correct Answers -Prohibited
uses
According to the American system of wire sizes in the United States which range from
50 to 1, a larger number represents _____________. - Correct Answers -Smaller wire
The United States uses which of the following standard systems of wire sizes? - Correct
Answers -American Wire Gauge
CONDUCTORS AND CABLES
Which of the following is true of shielding in instrumentation circuits? - Correct Answers
-It is grounded only at one end only.
It is important to do which of the following when conductors are fed into long runs of
conduit? - Correct Answers -Make sure wires are straight and do not cross over each
other.
Size 4/0 wire has a ______. - Correct Answers -greater cross-sectional area than size
3/0
Which of the following increases the flexibility of a wire? - Correct Answers -Stranding
Which of the following describes type TC Cable? - Correct Answers -It consists of two or
more insulated conductor twisted together and covered with a nonmetallic jacket.
In addition to being both flame-retardant and moisture-resistant, what characteristics
does Type NMC cable have? - Correct Answers -It is fungus and corrosion resistant
Where can yo find the ampacity of conductors for given conditions? - Correct Answers -
NEC Tables 310.15(B)(16) through 310.15(B)(21)
Type NMS cable is described as _____. - Correct Answers -nonmetallic-sheathed cable
Which of the following types of cable may be installed in concealed locations? - Correct
Answers -Type NM and type NMC
A ground wire may be which of the following colors - Correct Answers -Green
Which types of cables are suitable for direct burial? - Correct Answers -Type UF
The operating temperature is a primary factor in the selection of a ___________. -
Correct Answers -Fixture wire
Which of the following is not shown with cable markings? - Correct Answers -Prohibited
uses
According to the American system of wire sizes in the United States which range from
50 to 1, a larger number represents _____________. - Correct Answers -Smaller wire
The United States uses which of the following standard systems of wire sizes? - Correct
Answers -American Wire Gauge
