Deck 4: Enclosure Raceway and Service Cable Connections

Question 1

The combination of grounding and bonding ensures that the equipment is maintained at earth potential and will serve as an effective fault return path.

Answer 1

True

Question 2

Some users and enforcers of the Code suggest that a short section of a metal enclosure is one that is less than ____ feet long.

A) 5
B) 10
C) 15
D) 20

Answer 2

B

Question 3

Metal pulling elbows in runs of PVC conduit are not required to be grounded where encased in concrete ______ inches or thicker.

Answer 3

2
two

Question 4

Metal enclosures and raceways for service conductors and equipment are required to be connected to the grounding ____ conductor for electrical systems that are NOT grounded.

A) service-exit
B) electrode
C) system
D) service-entrance

Question 5

The term ____________________ means "connected to earth or to some conducting body that extends the earth connection."

Question 6

Metal components that are installed in a run of underground nonmetallic raceway and isolated from possible contact by a minimum cover of ____ to all parts of the metal components are not required to be connected to the grounded system conductor or grounding electrode conductor.

A) 11 inches
B) 13 inches
C) 18 inches
D) 25 inches

Question 7

Metal enclosures and raceways for service conductors and equipment are required to be connected to the grounded ____ conductor if the electrical system is grounded.

A) service-entrance
B) electrode
C) system
D) service-exit

Question 8

Metal enclosures and raceways for conductors added to existing installations of open wire, knob-and-tube wiring, and nonmetallic-sheathed cable are not required to be connected to the equipment grounding conductor where these enclosures or wiring methods are in runs of less than ____ feet.

A) 25
B) 50
C) 75
D) 100

Question 9

Short sections of metal enclosures or raceways used to provide support or protection of cable assemblies from physical damage are required to be grounded.

Question 10

The Code defines what is meant by short sections of metal enclosures or raceways.