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EET1051 H-5 Conduits, Raceways (12 h)

Text Book: Articles 342, 344, 350, 352, 356, 358
House Wiring: Chapter 2, 12, pages 38-40, 309-346
True/False

Indicate whether the statement is true or false.
 

 1. 

Nonmetallic sheathed cable is permitted to be run in a raceway.
 

 2. 

EMT must be secured within 30" of every outlet box, junction box, cabinet, and conduit body.
 

 3. 

The NEC considers horizontal runs of EMT supported by openings through framing members at intervals not greater than 10' and securely fastened within 3' of termination points to be properly supported.
 

 4. 

The securing and supporting requirements for Flexible Metal Conduit are the same as those for Type NM cable.
 

 5. 

Schedule 80 rigid nonmetallic PVC conduit has a larger inside diameter than Schedule 40 rigid nonmetallic PVC conduit.
 

 6. 

A separate equipment grounding conductor must always be installed in runs of ENT.
 

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

 7. 

A(n) __________ bend is a conduit bend formed by two 90-degree bends with a straight length of conduit between the two bends.
a.
back-to-back
b.
field
c.
offset
d.
saddle
 

 8. 

A(n) __________ bend is a conduit bend that is made with two equal-degree bends in such a way so the conduit changes elevation and avoids an obstruction.
a.
back-to-back
b.
field
c.
offset
d.
saddle
 

 9. 

A(n) __________ bend is a conduit bend that results in a conduit going over an object that is blocking the path of the run.
a.
back-to-back
b.
field
c.
offset
d.
saddle
 

 10. 

Where only two conductors are installed in a raceway, the conduit cannot be filled to more than __________ of the conduit's cross-sectional area.
a.
25%
b.
31%
c.
40%
d.
55%
 

 11. 

To find the maximum number of conductors of the same size and insulation type permitted in various types and sizes of conduit, you would look in __________ of the National Electrical Code.
a.
Chapter 8
b.
Annex C
c.
Annex D
d.
the index
 

 12. 

Rigid Metal Conduit must be supported at least every __________ feet along a conduit run. (General Rule)
a.
3
b.
8
c.
10
d.
12
 

 13. 

Rigid Metal Conduit must be supported within __________ of outlet boxes, junction boxes, cabinets, and conduit bodies. (General Rule)
a.
8"
b.
10"
c.
12"
d.
36"
 

 14. 

The NEC requires that a(n) __________ be used for the protection of conductors sized 4 AWG and larger installed in conduit.
a.
antioxidant
b.
coupling
c.
locknut
d.
insulated bushing
 

 15. 

The NEC defines __________ as an unthreaded thinwall raceway of circular cross section designed for the physical protection and routing of conductors and cables.
a.
EMT
b.
IMC
c.
PVC
d.
RMC
 

 16. 

EMT must be supported at least every __________ along the run. (General Rule)
a.
3'
b.
5'
c.
10'
d.
12'
 

 17. 

Expansion fittings are generally provided in exposed runs of rigid nonmetallic pvc conduit where __________.
a.
the run is long
b.
the run is subject to large temperature variations during or after installation
c.
expansion and contraction measures are provided for the building or other structures
d.
All of the above
 

 18. 

Three-point and four-point bends are types of __________ bends.
a.
back-to-back
b.
offset
c.
saddle
d.
None of the above
 

 19. 

The metric designator for 1/2" trade size EMT is __________.
a.
12
b.
13
c.
16
d.
28
 

 20. 

A(n) __________ plastic cap on the ends of rigid metal conduit designates inch trade sizes.
a.
black
b.
red
c.
blue
d.
None of the above
 

 21. 

RMC, IMC, EMT, and PVC conduits come in standard __________ foot lengths.
a.
5
b.
6
c.
8
d.
10
 

 22. 

The maximum number of 14 AWG conductors with THHN insulation that you could install in a 3/8" trade size FMC is __________ if the connector fittings are inside or __________ if the connector fittings are outside. (assume the use of a grounding conductor)
a.
1, 2
b.
3, 4
c.
4, 5
d.
5, 6
 

 23. 

The __________ on a conduit hand bender head is where you will place the bending mark when doing a stub-up bend.
a.
arrow
b.
rim notch
c.
star point
d.
hook
 

 24. 

A steel fish tape should be used when pulling conductors through an installed conduit system and into an energized loadcenter.
a.
True
b.
False
 

 25. 

When installing two or more conductors in a conduit or tubing, the maximum percentage of fill allowed by the NEC is __________.
a.
25
b.
31
c.
40
d.
60
 



 
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