Deck 9: General Requirements for Rough-In Wiring

Question 1

Where device boxes are installed in walls or ceilings with a noncombustible surface, the edge of the box must __________ the wall or ceiling surface.

A) not be set back farther than 1/8" from
B) not be set back farther than 1/4" from
C) not be set back farther than 1/2" from
D) be flush with

Answer 1

B

Question 2

Where the opening to an outlet, junction, or switch point is less than 8" in any dimension, each conductor must be long enough to extend at least __________ outside the opening.

A) 3"
B) 6"
C) 8"
D) far enough to complete the wiring

Answer 2

A

Question 3

The NEC allows Class 2 control wiring to be supported by the raceway that supplies power to the piece of equipment that the control wiring is associated with.

Answer 3

True

Question 4

Boxes for floor receptacles must be specifically listed for that purpose and no other box type can be used in a floor installation.

Question 5

When device boxes are installed in walls or ceilings with a combustible surface such as wood, the edge of the boxes must __________ the finished surface.

A) not be set back farther than 1/8" from
B) not be set back farther than 1/4" from
C) nor be set back farther than 1/2" from
D) be flush with

Question 6

Which of the following is not required to be marked on electrical conductors and cables?

A) Maximum rated voltage
B) Proper type letter or letters for the type of cable or conductor
C) AWG size or circular mills
D) The testing laboratory for the cable or conductor

Question 7

An electrician discovers that a two-wire cable has been run instead of a three-wire cable. To remedy the problem, the electrician runs a single insulated conductor along with the two-wire cable. This method is acceptable according to the NEC.

Question 8

Type __________ cable should be used when running a cable underground to an outside pole light.

A) NM-B
B) NM-C
C) UF
D) NM

Question 9

Conductors used in residential wiring can be copper, aluminum, or copper-clad aluminum.

Question 10

Sheetrock, a popular building material used to finish off walls and ceilings in residential and commercial construction, is also referred to as wallboard.

Question 11

When holes are bored through wood framing members for the purpose of installing an electrical cable, the holes must be bored so the edge of the hole is not less than __________ from the nearest edge of the wood framing member.

A) 1"
B) 1-1/4"
C) 1-1/2"
D) 1-3/4"

Question 12

A receptacle outlet controlled by a wall switch is permitted to serve as a lighting outlet in kitchens.

Question 13

An electrician must cut a groove into a wood beam to run Romex to a certain location. If the groove is cut into the beam 1-1/8", a steel plate at least 1/16" thick is required to protect the cable.

Question 14

The fixed glass section of a sliding glass door unit is counted as regular wall space when determining receptacle placement in a room.

Question 15

Section 300.20(A) requires conductors carrying alternating current and installed in ferrous (iron) metal boxes to be arranged to avoid heating the surrounding metal by magnetic induction.

Question 16

A short piece of metal raceway is used to provide protection to a cable assembly. According to the NEC, this is permitted even though the metal raceway is not mechanically continuous.

Question 17

__________ heating will occur when current carrying conductors of the same circuit are brought through separate holes in a metal box or enclosure.

A) Invective
B) Inductive
C) Convective
D) Conductive

Question 18

Receptacles are not required on a wall directly behind a range, counter-mounted cooking unit, or sink.

Question 19

Where nonmetallic sheathed cable is used with a single gang nonmetallic device box, the cable sheath must extend inside the box not less than __________.

A) 1/16"
B) 1/8"
C) 1/4"
D) 1/2"

Question 20

Which of the following colors is not acceptable for an ungrounded conductor?

A) Brown
B) Yellow
C) Orange
D) Gray

Question 21

Individual wall spaces of __________ feet or more in width are considered usable for the location of a lamp or appliance, and a receptacle outlet is required.

A) 2
B) 4
C) 6
D) 12

Question 22

Where one or more lighting outlet(s) are installed for interior stairways, there must be a wall switch to control the lighting outlet(s) at each floor level and landing, where the stairway between floor levels has __________ risers or more.

A) 6
B) 10
C) 12
D) 15

Question 23

A minimum of _________ communications outlet must be installed in all newly constructed dwelling units.

A) 1
B) 2
C) 3
D) 4

Question 24

At least one receptacle outlet must be installed at each peninsular counter space with a long dimension of __________ or greater and a short dimension of __________ or greater.

A) 12", 24"
B) 12", 48"
C) 48", 24"
D) 24", 12"

Question 25

In a garage, receptacle outlets must be located so that there is at least _____ receptacle outlet for each vehicle space in the garage.

A) 1
B) 2
C) 3
D) 4

Question 26

The required wall receptacle in each bathroom of a dwelling unit must be installed adjacent to, and within __________ of the sink. (General Rule)

A) 8"
B) 24"
C) 36"
D) 6'

Question 27

Where cables and raceways are installed less than 1-1/4" from the edge of framing members, a metal plate at least ____________________ thick must be installed to protect the cables and raceways. (General Rule)

Question 28

Receptacles that are installed to meet NEC Section 210.52 placement requirements are not permitted to be more than __________ feet above the floor.

A) 4.5
B) 5
C) 5.5
D) 6

Question 29

Device boxes can support a lighting fixture weighing no more than ________ lbs. as long as the fixture is secured to the box with at least two 6-32 screws.

A) 2
B) 6
C) 10
D) 35

Question 30

A(n)_________ is an entranceway or transitional space from the exterior to the interior of a house.

A) porch
B) foyer
C) annex
D) closet

Question 31

Lighting fixtures, weighing no more than __________, are permitted to be supported by outlet boxes.

A) 35 pounds
B) 45 pounds
C) 50 pounds
D) 75 pounds

Question 32

Receptacles must be installed so that no point measured along the floor line in any wall space is more than __________ feet from a receptacle.

A) 3
B) 6
C) 10
D) 12

Question 33

Receptacles must be placed behind a kitchen countertop so that no more than __________ feet is between each receptacle.

A) 2
B) 3
C) 4
D) 6

Question 34

Hallways of __________ or more in length must have at least one receptacle outlet.

A) 6'
B) 10'
C) 12'
D) 15'

Question 35

Receptacle outlets must be installed above, but not more than __________ the kitchen countertop.

A) 6"
B) 12"
C) 20"
D) 24"

Question 36

Boxes that are listed for ceiling suspended paddle fans are permitted to support fans that do not weigh more than __________ pounds. Boxes that can support more than 35 pounds must have the maximum wright marked on the box.

A) 35
B) 45
C) 50
D) 70

Question 37

The __________ stage is when the raceways, cable, boxes, and other electrical equipment are installed.

A) planning and preparation
B) trim-out
C) troubleshooting
D) rough-in

Question 38

In kitchens, a receptacle outlet must be installed at each counter space that is __________ or wider.

A) 6" wide
B) 12" wide
C) 10" wide
D) 24" wide

Question 39

An electrical box must be installed at each conductor splice point, outlet point, switch point, junction point, or termination point where the wiring method is conduit or cable.

A) True
B) False

Question 40

__________ are long thin strips of wood (or metal) used to make backing surfaces to support the finished surfaces in a room.

A) Furring strips
B) Knockout plugs
C) Deteriorating agents
D) Sill plates

Question 41

Describe how a 4 AWG or larger wire is identified as a grounded conductor.

Question 42

Explain the NEC requirements for outdoor receptacle placement at a one family dwelling.

Question 43

The common piece of electrical equipment that electricians use to insert into any knockout opening that is open and not used is called a _________________________.

Question 44

At least ____________________ inches of free conductor, measured from the point in the box where it emerges from its raceway or cable sheath, must be left at each outlet, junction, or switch point for the connection of luminaires or devices.

Question 45

The term used by electricians to describe the process of installing a residential electrical system is ____________________.

Question 46

Explain when conductors smaller than 14 AWG copper are allowed to be used in residential wiring.

Question 47

Where nonmetallic sheathed cable passes through factory or field punched holes in metal framing members, the cable must be protected by a(n) ____________________.