Article 300 Wiring Flashcards
.Conductors shall be installed within a raceway, cable, or enclosure.
a. True
b. False
true
300.3 A
All conductors of a circuit, including the grounded and equipment grounding conductors, shall be contained
within the same ________
unless permitted elsewhere in the Code.
a. raceway
b. cable
C.
trench
d.
all of these
raceway
cable
trench
ALL OF THIS
Conductors of ac and dc circuits, rated 600V or less, can occupy the same ___________ provided that all
conductors have an insulation rating equal to the maximum voltage applied to any conductor.
a. enclosure c. raceway
b. cable. d. all of these
a. enclosure c. raceway
b. cable.
d. ALL OF THIS
Where cables or nonmetallic raceways are installed through bored holes in joists, rafters, or wood members,
holes shall be bored so that the edge of the hole is the nearest edge of the wood member
a. not less than 1 1/4 in. from
b. immediately adjacent to
C. not less than 1/16 in. from
d. 90° away from
not less than 1 1/4 in. from
Cables laid in wood notches require protection against nails or screws by using a steel plate at least ___________
thick, installed before the building finish is applied.
a. c. 1/4 in.
1/16 in.
b. d. 1/2 in.
1/8 in.
1/16 in.
Where Type NM cable passes through factory or field openings in metal members, it shall be protected by ________
bushings or ________ grommets that cover metal edges.
a. approved c. listed
b. identified. d. none of these
Listed
Where Type NM cables pass through cut or drilled slots or holes in metal members, the cable shall be
protected by __________securely covering all metal edges fastened in the opening prior to installation of cables
a. listed bushings b. listed grommets
c. plates d. a or b
a. listed bushings b. listed grommets
c. plates
X d. A OR B
Where nails or screws are likely to penetrate nonmetallic-sheathed cable or ENT installed through metal
framing members, a steel sleeve, steel plate, or steel clip not less than _________ in thickness shall be used to protect the cable or tubing.
a. 1/16 in.
b. 1/8 in.
c. 1/2 in.
d. 3/4 in.
1/16 in.
Wiring methods installed behind panels that allow access shall be _________ according to their applicable articles.
a. supported
b. painted
c. in a metal raceway
d. all of these
supported
Where cables and nonmetallic raceways are installed parallel to framing members, the nearest outside surface of the cable or raceway shall be __________ the nearest edge of the framing member where nails or screws are likely to penetrate.
a. not less than 1 1/4 in. from
b. immediately adjacent to
C. not less than 1/16 in. from
d. 90° away from
not less than 1 1/4 in. from
Cables or raceways installed UNDER METAL- CORRUTED SHEET ROOF DECKING shall be supported so the nearest
outside surface of the cable or raceway is not less than ________ from the nearest surface of the roof decking.
a. 1⁄2 in.
b. 1 in.
C. 11⁄2 in.
d. 2 in.
1 1⁄2 in.
Where raceways contain insulated circuit conductors ________AWG and larger, the conductors shall be
protected from abrasion during and after installation by a fitting that provides a smooth, rounded insulating surface.
a. 8
b. 6
C. 4
d. 2
. 4
What is the minimum cover requirement for direct burial Type UF cable installed outdoors that supplies a
120V, 30A circuit?
a. 6 in.
b. 12 in.
c. 18 in.
d. 24 in.
d. 24 in.
300.5 table
Rigid metal conduit that is directly buried outdoors shall have at least ______of cover.
a. 6 in.
b. 12 in.
c.18 in.
d. 24 in.
6 in.
300.5 table
When installing PVC conduit underground without concrete cover, there shall be a minimum of
of cover.
a. 6 in. C. 18 in.
b. 12 in. d. 22 in.
18 in.
Table 300.5.
Minimum cover Requirements under
600 V
What is the minimum cover requirement for Type UF cable supplying power to a 120V, 15A GFCI-protected
circuit outdoors under a driveway of a one-family dwelling?
A 6in
b 12 in
C 16 in
D 24 in
12 in
Table 300.5.
Minimum cover Requirements under
600 V. column 4
Type UF cable used with a 24V landscape lighting system can be have a minimum cover of
A 6
B 12
C 4
D 18
6
Table 300.5.
Minimum cover Requirements under
600 V. column 5 NOT specified location
_______ is defined as the area between the top of direct-burial cable and the top surface of the finished grade.
A Notch
B Cover
C Gap
D none of these
Cover
The interior of underground raceways shall be considered a _______ location.
A Wet
B Dry
C Damp
D corrosive
Wet
Where direct buried conductors and cables emerge from grade, they shall be protected by enclosures or
raceways to a point at least ____above finished grade.
A 3ft
B 6ft
C 8ft
D 10ft
Direct-buried service conductors that are not encased in concrete and that are buried 18 in. or more below
grade shall have their location identified by a warning ribbon placed in the trench at least underground installation _______
above ……
12 in ??????
Direct-buried conductors or cables can be spliced or tapped without the use of splice boxes when the splice
or tap is made in accordance with 110.14(B).
a.
True
b false
True
110.14(B). lats sentence
Backfill used for underground wiring shall not _____
a. damage the wiring method
b. prevent compaction of the fill
c contribute to the corrosion of the
raceway
d all of these
All of these
a. damage the wiring method
b. prevent compaction of the fill
c. contribute to the corrosion of the
raceway
Conduits or raceways through which moisture may contact live parts shall be ____at either or both ends.
A. sealed
B. plugged
C. bushed
D. A or B
sealed or plugged
When installing direct-buried cables, a_____ shall be used at the end of a conduit that terminates
a. splice kit
b. terminal fitting
c. bushing
d. b or c
Terminal fittings or bushings????????
All conductors of the same circuit shall be ______ unless otherwise specifically permitted in the code
a. in the same raceway or cable
c. the same size
b. in close proximity in the same trench
d. a or b
??????? . in the same raceway or cable and in close proximity in the same trench
Direct-buried conductors, cables, or raceways, which are subject to movement by settlement or frost, shall be arranged to prevent damage to the _____ or to equipment connected to the raceways.
Cables or raceways installed using directional boring equipment shall be ________for this purpose.
a. marked
b. listed
c. labeled
d. approved
Raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, cable sheathing, cabinets, elbows,
couplings, fittings, supports, and support hardware shall be of materials suitable for
a.
corrosive locations
b. wet locations
c. the environment in which they are to be
installed
d. none of these
the environment in which they are to be
installed
Where corrosion protection is necessary for ferrous metal equipment and the conduit is threaded in the field,
the threads shall be coated with a(n)
electrically conductive, corrosion-resistant compound.
a. marked
b. listed
c. labeled
d.aproved
Which of the following metal parts shall be protected from corrosion?
