article 300 (7pg 71q)

Question 1

conductors shall be installed within a raceway, cable, or enclosure

Answer 1

True

300.3

Question 2

all conductors of a circuit, including the grounded and equipment grounding conductors, shall be contained within the same _____, unless permitted elsewhere in the code

Answer 2

raceway
cable
trench

(all of these)

Question 3

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

Answer 3

not less than 1-1/4” from

Question 4

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

Answer 4

enclosure
cable
raceway

(all of these)

Question 5

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

Answer 5

1/16”

Question 6

where type NM cable passes through factory or field openings n metal members, it shall be protected by ______ bushings or _______ grommets that cover metal edges

Answer 6

listed or listed

Question 7

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 the cable

Answer 7

listed bushing or
listed grommets

Question 8

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

Answer 8

1/16”

Question 9

wiring methods installed behind panels that allow access shall be _____ according to their applicable articles

Answer 9

supported

Question 10

where cables and non-metalic 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

Answer 10

not less than 1-1/4 “ from

TQ

Question 11

cables or raceways installed under metal-corrugated 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

Answer 11

1-1/2”

Question 12

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

Answer 12

4 AWG

Question 13

what is the minimum cover requirement for direct burial Type UF cable installed outdoors that supplies a 120 V, 30 A circuit

Answer 13

24”

300.5

Question 14

rigid metal conduit that is directly buried outdoors shall have at least _____ of cover

Answer 14

6”

Question 15

when installing PVC conduit underground without concrete cover, there shall be a minimum of ________ of cover

Answer 15

18”

Question 16

what is the minimum cover requirement for type UF cable supplying power to a 120 V, 15 A GFCI-protected circuit outdoors under a driveway of a one-family dwelling?

Answer 16

12”

Question 17

Type UF cable used with a 24V landscape lighting system can have a minimum cover of ________

Answer 17

6”

Question 18

_________ is defined as the area between the top of direct-burial cable and the top surface of the finished grade

Answer 18

Coverthe

Question 19

the interior of underground raceways shall be considered a ______ location

Answer 19

wet

Question 20

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

Answer 20

8 feet

TQ

Question 21

direct-buried service conductors that are not encased in concrete and that are buried 18in or more below grade shall have their location identified by a warning ribbon placed in the trench at least _______above the underground installation

Answer 21

12”

Question 22

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)

Answer 22

True

Question 23

backfill used for underground wiring shall not _____

Answer 23

-damage the wiring method
-prevent compaction of the fill
-contribute to the corrosion of the racway

Question 24

conduits or raceways through which moisture may contact live parts shall be _____ at either or both ends

Answer 24

sealed or plugged

Question 25

when installing direct-buried cables, a ____ shall be used at the end of a conduit that terminates underground

Answer 25

terminal fitting OR bushing 300.5 H

Question 26

all conductors of the same circuit shall be _____, unless otherwise specifically permitted in the code

Answer 26

-in the same raceway or cable -in close proximity in the same trench

Question 27

direct-buried conductors, cables, or raceways, which are subject to movement by settlement of frost, shall be arranged to prevent damage to the _________ or to equipment connected to the raceways.

Answer 27

enclosed conductors

Question 28

cables or raceways installed using directional boring equipment shall be _____ for this purpose

Answer 28

approved

Question 29

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 _______

Answer 29

environment which to be installed

Question 30

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

Answer 30

approved

Question 31

which of the following metal parts shall be protected from corrosion

Answer 31

-ferrous metal raceways -ferrous metal elbows -ferrous boxes

Question 32

aluminum raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, cable sheathing, cabinets, elbows, couplings, nipples, fittings, supports, and support hardware ____ shall be provided with supplementary corrosion protection.

Answer 32

-embedded or encased in concrete -in direct contact with the earth

Question 33

nonmetallic raceways, cable trays, boxes, cables with a nonmetallic outer jacket, fittings, and support hardware shall be ________

Answer 33

-listed as sunlight resistant -identified as sunlight resistant

Question 34

where nonmetallic wiring methods are subject to exposure to chemical solvents or vapors, they shall be inherently resistant to chemicals based upon their being ________

Answer 34

-listed for the chemical -identified for the chemical

Question 35

an exposed wiring system for indoor wet locations where walls are frequently washed shall be mounted so that there is at least a _____ between the mounting surface and the electrical equipment

Answer 35

1/4" in airspace

Question 36

in general, areas where acids and alkali chemicals are handled and stored may present corrosive conditions, particularly when wet or damp

Answer 36

True

Question 37

where portions of a cable raceway or sleeve are subjected to different temperatures and condensation is known to be a problem, the _____ shall be filled with an approved material to prevent the circulation of warm air to a colder section of the raceway or sleeve.

Answer 37

raceways or sleeve

Question 38

raceways shall be provided with expansion fittings where necessary to compensate for thermal expansion and contraction

Answer 38

True

Question 39

raceways or cable trays containing electric conductors shall not contain any pipe or tube for steam, water, air, gas, drainage, or any service other than _______

Answer 39

electric

Question 40

where raceways are installed in wet locations above grade, the interior f these raceways shall be considered a _______ location

Answer 40

wet

Question 41

metal raceways, cable armors, and other metal enclosures shall be ______ joined together into a continuous electric conductor so as to provide effective electrical continuity.

Answer 41

metallically

Question 42

raceways, cable assemblies, boxes, cabinets, and fittings shall be securely fastened in place

Answer 42

True

Question 43

where independent support wires of a ceiling assembly are used to support raceways, cable assemblies, or boxes above a ceiling, they shall be secured at _____ ends

Answer 43

both

Question 44

electric wiring within the cavity of a fire-rated, floor-ceiling, or roof-ceiling assembly shall not be supported by the ceiling assembly or ceiling support wires.

Answer 44

True

Question 45

the independent support wires for a wiring in a fire-rated ceiling assembly shall be distinguished from fire-rated suspended-ceiling framing support wires by _____

Answer 45

-color -tagging -other effective means

Question 46

ceiling-support wires used for the support of a electrical raceways and cables within nonfire-rated assemblies shall be distinguishable from the suspended-ceiling framing support wires

Answer 46

False

Question 47

raceways can be used as a means of support of Class 2 circuit conductors or cables that connect to the same equipment

Answer 47

True

Question 48

cable wiring methods shall not be used as a means of support for _____

Answer 48

-other cables -raceways -nonelectrical equipment

Question 49

metal or nonmetallic raceways, cable armors, and cable sheaths _____ between cabinets, boxes, fittings or other enclosures or outlets

Answer 49

shall be continuous

Question 50

raceways and cables installed into the _____ of open-bottom equipment shall not be required to be mechanically secured to the equipment

Answer 50

bottom

Question 51

conductors in raceways shall be _____ between outlets, boxes, devices, and so forth.

Answer 51

continuous

Question 52

in multiwire branch circuits, the continuity of the _____ conductor shall not be dependent upon the device connections

Answer 52

grounded

Question 53

when the opening to an outlet, junction, or switch point is less than 8 in. in any dimension, each conductor shall be long enough to extend at least _______ outside the opening of the enclosure

Answer 53

3"

Question 54

fittings and connectors shall be used only with specific wiring methods for which they are designed and listed

Answer 54

true

Question 55

a box or conduit body shall not be required where cables enter or exit from conduit or tubing that is used to provide cable support or protection against physical damage

Answer 55

True

Question 56

a box or conduit body shall not be required for splices and taps in direct-buried conductors and cables as long as the splice is made with a splicing device that is identified for the purpose

Answer 56

true

Question 57

a box or conduit body shall not be required for conductors in handhole enclosures

Answer 57

true

Question 58

the number and size of conductors permitted in a raceway is limited to _____

Answer 58

-permit heat to dissipate -prevent damage to insulation during installation -prevent damage to insulation during removal of conductors

Question 59

raceways shall be ______ between outlet, junction, or splicing points prior to the installation of conductors

Answer 59

installed complete

Question 60

short sections of raceways used for ______ shall not be required to be installed complete between outlets, junction, or splicing points

Answer 60

protection of cables from physical damage

Question 61

metal raceways shall not be ___________ by welding to the raceway

Answer 61

-supported -terminated -connected

Question 62

a vertical run of 4/0 AWG copper shall be supported at intervals not exceeding ______

Answer 62

80 feet 300.19

Question 63

conductors in ferrous metal raceways and enclosures shall be arranged so as to avoid heating the surrounding ferrous metal by alternating-current induction. to accomplish this, the ______conductor(s) shall be grouped together

Answer 63

-phase -grounded -equipment grounding

Question 64

_______ is a nonferrous, nonmagnetic metal that has no heating due to hysteresis heating.

Answer 64

aluminum

Question 65

electrical installations in hollow spaces, vertical shafts, and ventilation or air-handling ducts shall be made so that the possible spread of fire or products of combustion is not _______

Answer 65

substantially increased

Question 66

openings around electrical penetrations through fire-resistant rated walls, partitions, floors, or ceilings shall _________to maintain the fire-resistance rating

Answer 66

be fire-stopped using approved methods

Question 67

no wiring of any type shall be installed in ducts used to transport_____

Answer 67

-dust -flammable vapors -loose stock

Question 68

equipment and devices shall only be permitted within ducts or plenum chambers used to transport environmental air if necessary for their direct action upon, or sensing of, the _______

Answer 68

contained air

Question 69

the space above a hung ceiling used for environmental air-handling purposes is an example of _______ and the wiring limitations of _______ apply

Answer 69

other space used for environmental air, 300.22(C)

Question 70

wiring methods permitted in the ceiling areas used for environmental air include ___________

Answer 70

-electrical metallic tubing -FMC of only` 4 ft -RMC without an overall nonmettalic covering 300.22

Question 71

wiring methods and equipment installed behind suspended-ceiling panels shall be arranged and secured to allow access to the electrical equipment

Answer 71

True