Deck 5: Conductor Identification, Switch Control of Lighting Circuits, Bondinggrounding of Wiring Devices, Induction Heating

Question 1

Screwless push-in terminals (i.e., back wiring holes) on receptacles are listed only for use with what type of branch-circuit conductor?

Answer 1

These terminals are used with solid 14 AWG copper conductors.

Question 2

On isolated ground receptacles, the metal yoke ____ integrally bonded to the equipment grounding terminal of the receptacle.

A) is
B) is not

Answer 2

B

Question 3

When using individual conductors in raceway, which insulation color is NOT permitted for the grounded conductor (neutral)?

A) gray
B) white
C) green with three white stripes

Answer 3

C

Question 4

Snap switches with nonmetallic yokes (straps) have a terminal for the equipment grounding conductor. Using this type of switch provides a means for grounding ____ faceplates when nonmetallic boxes are used.

A) oversize (goof)
B) metal
C) nonmetallic
D) recessed

Question 5

"T"-rated snap switches are intended for what application?

Question 6

The grounded (identified) conductor of 6 AWG or smaller must have an outer finish that is ____.

A) white
B) gray
C) three continuous white stripes
D) any of the above

Question 7

When receptacles or switches have No. 6-32 screws secured to them with small pieces of cardboard, these pieces of cardboard must be ____ when the wiring device is installed in a metal outlet box.

A) left in place
B) removed
C) replaced with metal lock washers
D) none of these

Question 8

From how many locations does four-way switching allow a lighting outlet to be controlled?

Question 9

Describe what NEC 250.148 requires to maintain the continuity of the equipment grounding path.

Question 10

Name at least four kinds of lighting switches.

Question 11

When terminating a receptacle, the white (grounded) conductor is always connected to the ____________________-colored terminal, and the phase (hot) conductor is always connected to the ____________________-colored terminal.

Question 12

The conductors that run between a switched outlet and the switch controlling the outlet are called a(n) ____________________.

Question 13

Phase conductors 6 AWG and smaller ____ permitted to be re-identified as equipment ground conductors using green paint, tape, or other effective means.

A) are
B) are not

Question 14

The NEC requires that switching be done only in ____ conductors.

A) ungrounded
B) designated
C) black
D) red

Question 15

When is a reidentified white conductor NOT permitted?

Question 16

In older existing installations, where an equipment ground does not exist in a metal switch box that is located within reach of a conductive floor such as tile or cement, NEC 404.9(B) requires the use of what kind of faceplate?

Question 17

To avoid inductive heating in metallic raceways, the NEC requires that ____.

A) all circuit conductors be run in the same raceway
B) the grounded (neutral) conductor be oversized
C) the equipment grounding conductor be bonded to the raceway
D) none of these

Question 18

All 125-volt, 15- and 20-ampere receptacles in a dwelling are required to be ____.

A) tamper resistant
B) AFCI protected
C) GFCI protected
D) weather resistant

Question 19

Alternating current, general-use snap switches are UL-listed to control motors rated up to ____ horsepower.

A) 1/2
B) 3/4
C) 2
D) as marked on the switch

Question 20

The long slot on a 15-ampere, 125-volt, receptacle is the ____ conductor.

A) grounded
B) phase "hot"
C) equipment-grounding
D) traveler

Question 21

Specify the maximum overcurrent protection permitted for following the circuit conductor sizes:
a.15 amperes
b.20 amperes
c.30 amperes
14 AWG copper

Question 22

Specify the maximum overcurrent protection permitted for following the circuit conductor sizes:
a.15 amperes
b.20 amperes
c.30 amperes
12 AWG copper

Question 23

Specify the maximum overcurrent protection permitted for following the circuit conductor sizes:
a.15 amperes
b.20 amperes
c.30 amperes
10 AWG copper

Question 24

Receptacles have several screw terminals for the attachment of circuit conductors. Match the following screws with their intended conductor.
a.Equipment grounding conductor
b.Hot (phase) conductor
c.Grounded (white) conductor
Silver-colored screw

Question 25

Match the following switch types with the correct number of terminals for each.
a.Two terminals
b.Four terminals
c.Three terminals
Three-way switch

Question 26

Receptacles have several screw terminals for the attachment of circuit conductors. Match the following screws with their intended conductor.
a.Equipment grounding conductor
b.Hot (phase) conductor
c.Grounded (white) conductor
Green hexagonal screw

Question 27

Match the following switch types with the correct number of terminals for each.
a.Two terminals
b.Four terminals
c.Three terminals
Four-way switch

Question 28

A 4-way switch does not have "ON" and "OFF" markings. Four-way switches are connected to the "____________________" between two 3-way switches. One 3-way switch is fed by the ____________________; the other 3-way switch is connected to the load.

Question 29

Specify the maximum overcurrent protection permitted for following the circuit conductor sizes:
a.15 amperes
b.20 amperes
c.30 amperes
The common point on a wye-connected polyphase system or the mid-point on a single phase system is the _________________________.

Question 30

Match the following switch types with the correct number of terminals for each.
a.Two terminals
b.Four terminals
c.Three terminals
Single-pole switch

Question 31

Receptacles have several screw terminals for the attachment of circuit conductors. Match the following screws with their intended conductor.
a.Equipment grounding conductor
b.Hot (phase) conductor
c.Grounded (white) conductor
Brass-colored screw