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EET1051 H-4 Cables (13 h)

Text Book: Articles 310, 320, 330, 334, 338, 340, 400
House Wiring: Chapters 2, 11, pages 31-38, 284-308
True/False

Indicate whether the statement is true or false.
 

 1. 

Romex is considered to be supported when it passes through bored or punched holes in framing members.
 

 2. 

When service entrance cable is used for branch circuits, the only conductor permitted to be bare is the equipment grounding conductor.
 

 3. 

In new installations, service entrance cable with a bare grounded conductor is permitted to be used in branch circuits for an electric range.
 

 4. 

A 'homerun' may enter a loadcenter through knockouts in the back, sides, top, or bottom of the loadcenter.
 

 5. 

Suspended ceiling grids are permitted by the NEC to support nonmetallic sheathed cables.
 

 6. 

Even though the NEC permits Type NM cable to be used in one- and two-family homes, it may not be approved for use in your area by the AHJ.
 

 7. 

The NEC requires insulated staples to be used when securing and supporting Type NM cable.
 

 8. 

If a hole is bored into a stud and there is less than 1 1/4" between the edge of the hole and the edge of the stud, a steel plate at least 1/16" thick or a listed and marked steel plate that is less than 1/16" if it still provides equal or greater protection against nail or screw penetration, must be used.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 9. 

An insulated anti-short fitting required to be installed in the ends of Type AC cable to protect the wires from abrasion is typically called a(n) __________.
a.
orange head
b.
red head
c.
blue devil
d.
blue head
 

 10. 

Which of the following is not a type of nonmetallic sheathed cable?
a.
Type NM
b.
Type NM-B
c.
Type NMC
d.
Type NM-U
 

 11. 

Cables run along the sides of framing members must be installed at least __________ from the nearest edge of studs, joists, or rafters.
a.
3"
b.
6"
c.
1-1/4"
d.
None of the above
 

 12. 

In attics not accessible by permanent stairs or ladders, Romex run across the top of floor joists within __________ of the scuttle hole must be protected by means such as guard strips.
a.
3'
b.
5'
c.
6'
d.
7'
 

 13. 

Romex must be secured at no more than __________ inches from all electrical boxes except a nonmetallic single-gang box.
a.
6"
b.
8"
c.
10"
d.
12"
 

 14. 

Romex installed in either a metal or plastic two-gang device box with interior cable clamps, must be secured no more than __________ from the device box.
a.
6"
b.
8"
c.
10"
d.
12"
 

 15. 

The inner edge of any bend in nonmetallic sheathed cable cannot be less than __________ times the cable diameter.
a.
6
b.
5
c.
4
d.
3
 

 16. 

The radius of the curve of the inner bend in Armored Cable must not be less than __________ times the diameter of the cable.
a.
3
b.
4
c.
5
d.
6
 

 17. 

Type MC cable with an interlocked armor or corrugated sheath cannot be bent to a radius of less than __________ times the external diameter of the metallic sheath.
a.
3
b.
5
c.
7
d.
9
 

 18. 

Type MC cable of sizes 14, 12, and 10 AWG must be secured within 12" from every box and then must be supported at intervals not exceeding __________.
a.
4.5'
b.
5'
c.
6'
d.
7'
 

 19. 

The NEC requires at least __________ of free conductor in electrical device boxes for connection to switches and receptacles.
a.
6"
b.
8"
c.
10"
d.
12"
 

 20. 

In single-gang nonmetallic electrical device boxes, at least __________ of the cable sheathing must extend into the box.
a.
1/8"
b.
1/4"
c.
1/2"
d.
3/4"
 

 21. 

When installing Romex into a single-gang nonmetallic device box, the cable must be secured no more than __________ from the box.
a.
8"
b.
10"
c.
12"
d.
None of the above
 

 22. 

The part of a branch circuit that originates in the loadcenter and provides electrical power to the first electrical box in a circuit is called a __________.
a.
ground out
b.
home run
c.
fly ball
d.
strike out
 

 23. 

Manufacturers of Type NM cable are now color coding their cables. The color typically used for 12 AWG Romex cable is __________.
a.
red
b.
blue
c.
yellow
d.
orange
 

 24. 

When unrolling cable from a coil, the best way is to pull the cable out of the coil from the __________.
a.
outside of the coil
b.
inside of the coil
c.
underside of the coil
d.
None of the above
 

 25. 

The maximum distance between supports for a Type NM cable is __________.
a.
3 feet
b.
4 1/2 feet
c.
6 feet
d.
10 feet
 



 
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