Deck 13: Switching Circuit Installation

Question 1

The National Electrical Code requires that all switching be done in the __________ circuit conductor.

A) grounded
B) grounding
C) switch loop
D) ungrounded

Answer 1

D

Question 2

The white wire used in a traditional switch loop wired with a two-wire cable like Type NM must be re-identified. This is normally done with black tape.

Answer 2

True

Question 3

Like a four-way switch, a double-pole switch has four terminal screws and the toggle has 'On' and 'Off' written on it.

Answer 3

False

Question 4

Like single-pole switches, dimmer switches always come from the factory with screw terminals.

Question 5

To control a lighting outlet from four locations, a circuit requires __________.

A) four single-pole switches
B) a four-way switch
C) two three-way switches and a four-way switch
D) two three-way switches and two four-way switches

Question 6

When using Type NM cable a white wire is sometimes used as a traveler conductor for three-way and four-way switching and is required to be re-identified as an ungrounded conductor.

Question 7

There is no need to connect a white insulated grounded conductor to any single-pole, double-pole, three-way, or four-way switch in a residential switching circuit.

Question 8

A permanent black marker can be used to re-identify a white insulated conductor as a 'hot' conductor in a cable.

Question 9

Switches installed in metal boxes are considered grounded as long as the metal strap of the switch is touching the metal box after installation.

Question 10

Switch loops are not permitted in three-way switch circuits.

Question 11

The most common switch used in residential wiring is the __________ switch.

A) double-pole switch
B) combination switch
C) three-way
D) single-pole

Question 12

The brass-colored terminals on a three-way switch are called the __________ terminals.

A) common
B) traveler
C) ungrounded
D) grounded

Question 13

Dimmer switches are available in single-pole, three-way, and four-way models.

Question 14

Four-way switches must be placed __________ in the circuit.

A) before the three-way switches
B) in line with the three-way switches
C) after the three-way switches
D) between the three-way switches

Question 15

The black-colored common terminal on a three-way switch should always have a __________ insulated wire connected to it.

A) white
B) black
C) red
D) Any colored insulated wire is permitted.

Question 16

Motor loads not exceeding 80% of the ampere rating of the switch at its rated voltage are permitted to be controlled by Alternating Current General Use Snap Switches.

Question 17

A double-pole switch can be used to control two 120-volt circuits.

Question 18

If the circuit grounding conductor is connected to the green grounding terminal on the switch, there is no need to ground the metal device box in which the switch is installed.

Question 19

When wiring a house using conduit, the NEC permits a white insulated conductor to be used as a 'hot' conductor in a switch loop as long as it is re-identified as such.

Question 20

When re-identifying a white insulated conductor as a 'hot' ungrounded conductor, the identifying mark must completely encircle the conductor.

Question 21

Explain what must be done to a receptacle so that it may be split-wired with half of it hot and the other half switch-controlled.

Question 22

Three way switches are always installed in __________.

A) pairs
B) threes
C) fours
D) None of the above

Question 23

Four-way switches are always installed between two __________ switches.

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

Question 24

A(n) ____________________ switch is used to control a 240-volt load, such as a water heater, in a residential wiring system.

Question 25

Which of the following are the same as General Use Snap Switches?

A) Snap switches
B) Toggle switches
C) Switches
D) All of the above

Question 26

A/an ___________ is a device that detects when a person has entered a room and switches on the room lighting;

A) four-way switch
B) single-pole switch
C) dimmer switch
D) occupancy sensor

Question 27

When wiring a house with a cable wiring method, a __________ insulated wire cannot be used in a switch loop switching arrangement.

A) red
B) white (re-identified)
C) black
D) All of the above can be used.

Question 28

When installing a receptacle so that one half is controlled by a switch and the other half is hot all the time, the switch-controlled half should be located on the ____________________ of the receptacle.

Question 29

When wiring a house with a conduit wiring method, a __________ insulated wire cannot be used in a switch loop as a 'hot' conductor.

A) red
B) white (re-identified)
C) blue
D) black

Question 30

Which of the following switches tend to generate the most heat?

A) Double-pole switches
B) Dimmer switches
C) Three-way switches
D) Four-way switches

Question 31

____________________ switches are used to control one or more lighting loads from two or more locations.

Question 32

Explain how to tell the difference between a four-way switch and a double-pole switch.

Question 33

A switching arrangement where the feed is brought to the lighting outlet first and a two-wire cable is run from the lighting outlet to the switch is called a(n) _________________________.

Question 34

A switch type that raises or lowers the lamp brightness of a lighting fixture is a __________ switch.

A) two-way
B) dimmer
C) pilot light
D) combination

Question 35

A/an ________ is a device that controls the flow of electricity on a circuit for a certain amount of time.

A) four-way switch
B) timer
C) motion sensor
D) single-pole switch

Question 36

Explain where combination switches are usually installed in residential wiring systems.

Question 37

____________________ switch devices consist of two switches on one yoke or strap.

Question 38

When installing a ceiling suspended paddle fan with a lighting kit and you want to have separate control of the fan and light, a __________ must be run from the switching location to the paddle fan location.

A) two-wire cable
B) three-wire cable
C) four-wire cable
D) five-wire cable

Question 39

Explain how a traditional switch loop for a single-pole switch is wired using Type NM cable.

Question 40

The number of conductors required to be installed between three-way and four-way switches is ____________________.

Question 41

Explain why one dimmer switch and one regular three-way switch are used in three-way circuits instead of two three-way dimmer switches. Assume the use of non-digital dimmers.

Question 42

Section 404.2(C) requires a grounded conductor be installed at the switch location unless there is a way to install a grounded conductor in the future if one is needed. This means that a three-wire cable with a white grounded conductor instead of a two-wire cable with a reidentified white wire would need to be installed between the lighting outlet and the switch box location. List the situations when this is not required.

Question 43

Explain how a switch loop for a single-pole switch following the requirements of Section 404.2(C) is wired. Assume the use of Type NM cable.

Question 44

Describe benefits to using timers, motion sensors, and occupancy sensors in residential electrical systems.

Question 45

Explain why the top half of a split-wired receptacle is hot all the time and the switch-controlled half is on the bottom.