Deck 18: Device Installation

Question 1

Which of the following conductors are permitted to be used for the push-in method of attaching conductors to a device?

A) 14 AWG solid copper
B) 14 AWG stranded copper
C) 14 AWG aluminum
D) 14 AWG copper-clad aluminum

Answer 1

A

Question 2

All metal device boxes need to have the circuit equipment-grounding conductor(s) connected to it with a 10-32 green grounding screw.

Answer 2

True

Question 3

A TVSS device works by __________ the high-surge voltage to a level that a piece of equipment like a computer can withstand.

A) smoothing
B) chopping
C) stopping
D) clamping

Answer 3

D

Question 4

An equipment-grounding conductor may not be __________.

A) bare
B) green
C) green with yellow stripes
D) green with white stripes

Question 5

The most common receptacle type used in residential wiring is the single receptacle.

Question 6

In all areas specified in Section 210.52, all nonlocking type 125- and 250-volt, 15- and 20-ampere receptacles must be tamper-resistant.(General Rule)

Question 7

If a white conductor in a Type NM cable is connected to a traveler terminal on a three-way switch, it does not have to be reidentified because it is not "hot" all the time.

Question 8

Section 210.12(A) in the NEC requires all of the 15- and 20-ampere, 120-volt branch circuits installed in dwelling unit kitchens, family rooms, dining rooms, living rooms, parlors, libraries, dens, bedrooms, sun rooms, recreation rooms, closets, hallways, laundry areas, or similar rooms or areas to be AFCI protected.

Question 9

On a 20-ampere rated branch circuit, which of the following types of receptacles may not be used?

A) 20-ampere single receptacles
B) 15-ampere single receptacles
C) 15-ampere duplex receptacles
D) 20-ampere duplex receptacles

Question 10

When self-grounding receptacles are used with nonmetallic device boxes, there is no need to attach the circuit grounding conductor to the green screw on the receptacle.

Question 11

Section 404.10(B) specifies that screws used for attaching a switch to an electrical box must be sheet metal screws with a thread that matches the thread gage or size of the screw holes in the box.

Question 12

When a duplex receptacle is installed horizontally, it is recommended that the __________ slot be located on top.

A) grounded
B) grounding
C) ungrounded
D) Either A or B

Question 13

Which of the following determine the effect electrical shock has on the body?

A) The amount of current flowing through the body
B) The path the current takes through the body
C) The length of time the current flows through the body
D) All of the above

Question 14

A __________ device operates by monitoring the current flow on both the ungrounded "hot" conductor and the grounded conductor.

A) TVSS
B) circuit breaker
C) fuse
D) GFCI

Question 15

A Class A GFCI device is designed to trip when fault current levels are _____ milliamps or more and not to trip when the fault current is less than _____ milliamps.

A) 6, 4
B) 4, 6
C) 6, 5
D) 5, 2

Question 16

A __________ switch would be used to control two lights from one location.

A) double-pole
B) single-pole
C) three-way
D) four-way

Question 17

Many of the appliances used in today's homes contain sensitive electronic circuitry, circuit boards, or microprocessors and these components are susceptible to transient voltages, also known as __________ or voltage spikes.

A) voltage drops
B) voltage surges
C) voltage dips
D) voltage peaks

Question 18

A feed-through GFCI receptacle can provide GFCI protection for regular receptacles installed "downstream" on the same branch circuit.

Question 19

A multiple receptacle has more than __________ contact device(s) on the same yoke.

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

Question 20

A GFCI device provides protection against __________.

A) short circuits
B) ground faults
C) overcurrents
D) All of the above

Question 21

GFCI receptacles should be tested at least once per __________.

A) day
B) week
C) month
D) year

Question 22

A(n) ____________________ switch is used to control a 240-volt load from one location.

Question 23

A duplex receptacle that is wired so one half is hot all the time and the other half is switch-controlled is called a(n) ____________________ receptacle.

Question 24

If a device box has been installed too far back behind a wall, a __________ can be used to bring the edge of the box flush with the wall surface.

A) new box
B) wall shrinker
C) box extender
D) different kind of device

Question 25

Explain the purpose of the metal strap that runs through or behind a receptacle or switch.

Question 26

The metal frame that a receptacle or switch is built around is called a(n) ____________________.

Question 27

The preferred method for connecting a circuit conductor to a device is to form a __________ in the wire, put it under a terminal screw, and tighten the screw properly.

A) terminal loop
B) curve
C) circle
D) jug handle

Question 28

To GFCI-protect receptacles that are downstream from a GFCI receptacle, the wiring going to those receptacles is connected to the ____________________ terminals on a feed-through GFCI receptacle.

Question 29

A(n) _________ is a familiar type of transient voltage surge suppressor that is usually bought and installed by the homeowner rather than the electrician.

Question 30

The NEC defines a(n) ____________________ as a contact device installed at an outlet for the connection of an attachment plug.

Question 31

Electricians create a split-wired receptacle by removing the __________ between the brass terminal screws on the "hot" side of a duplex receptacle.

A) screw
B) connecting tab
C) strap
D) wire

Question 32

A device intended to provide protection from the effects of arc faults by recognizing characteristics unique to arcing and by functioning to de-energize the circuit when an arc is detected is called a(n) ________________________________________.

Question 33

The proper NEMA designation for a 30-ampere, 125/250-volt grounding-type receptacle installed for an electric clothes dryer is __________.

A) 5-15R
B) 6-30R
C) 14-30R
D) 10-30R

Question 34

The proper NEMA designation for a 15-ampere, 125-volt grounding-type receptacle is __________.

A) 5-15R
B) 5-15P
C) 5-20R
D) 6-15R

Question 35

On a receptacle, the ____________________ conductor is connected to the silver terminal screw.

Question 36

__________ connections on devices are a reliable way to terminate circuit conductors to a switch or receptacle device and can save time during installation because a terminal loop is not required to be made.

A) New
B) Push-in
C) Back-wired
D) Straight through

Question 37

If the two conductors to be connected to a single-pole switch are black and a reidentified white, the connection you are using is called a traditional _________________________.

Question 38

When more than one grounded conductor enters a device box, a wiring practice to use so that only one conductor gets connected to the silver terminal screw is to use a(n) ____________________.

Question 39

A __________ receptacle is one that has internal shutters that are closed behind the receptacle slots when there is no attachment plug inserted.The shutters open when a plug is inserted allowing the plug (and cord) to become energized.

A) duplex
B) single
C) tamper-resistant
D) GFCI

Question 40

Section 406.5 specifies that screws used for attaching a receptacle to an electrical box must be machine screws with 32 threads per inch or be the type supplied by a __________ receptacle.

Question 41

Describe different strategies that electricians use to properly position a duplex receptacle into a device box.

Question 42

Explain why it is recommended to install receptacles with the grounding slot up.

Question 43

Explain what can be done during the rough-in phase to make switch installation easier in the finish phase of the wiring process.

Question 44

Explain how metal faceplates are grounded if nonmetallic device boxes are used.

Question 45

Explain the drawbacks of the push-in method of securing conductors to devices.

Question 46

What do the letters "TVSS" stand for?