Code, Standards, and Practices 1, Based on the 2020 NEC Online Materials: Lesson 7 Introduction to Wiring Devices

Question 1

Electrical receptacles come in which two basic varieties?
Select one:

a.15 and 20 A

b.125 and 250 V

c.Straight blade and locking

d.White and almond

e.None of the above

Answer 1

Straight blade and locking

Question 2

Locking receptacles are used in applications where ? is/are a primary concern.
Select one:

a. child safety

b. ensured, consistent contact

c. environmental conditions

d. high voltage

Answer 2

ensured, consistent contact

Question 3

? has standardized the configuration of receptacle contacts based upon the number of poles and wires, as well as the amperage and voltage rating of the product.
Select one:

a.International Association of Electrical Inspectors (IAEI)

b.National Electrical Code (NEC)

c.National Electrical Manufacturers Association (NEMA)

d.Underwriters Laboratories (UL)
Incorrect

e.None of the above

Answer 3

National Electrical Manufacturers Association (NEMA)

Question 4

Which of the following is not a basic component of a switch or receptacle?
Select one:

a.Actuator

b.Contact

c.Lock spring

d.Mounting strap

e.Terminal

Answer 4

Lock spring

Question 5

The terminals on a switch or receptacle are used for two primary purposes: a point of contact or interface with the building wire and bundling stranded wire.
Select one:
True
False

Answer 5

True

Question 6

When the stranded wire begins to spread apart in the installation process, this is referred to as ? .
Select one:

a.fill

b.mash

c.splay

d.spread

e.none of the above

Answer 6

splay

Question 7

The five primary methods of terminating a wiring device are: back wire, ? , speed wire, pre-terminated leads (leaded), and modular.
Select one:

a.loop wire

b.side saddle

c.side wire

d.spin set

e.none of the above

Answer 7

side wire

Question 8

Back-wire devices incorporate a ? that is threaded onto the terminal screw, either internal or external to the device.

Select one:

a.clamping plate

b.conductor lock

c.terminal housing

d.wire cleat

e.none of the above

Answer 8

clamping plate

Question 9

Proper installation of a conductor on a side-wired device requires that the stripped lead be looped in the ? direction.
Select one:

a.clockwise
`
b.counter-clockwise

c.left

d.right

e.none of the above

Answer 9

clockwise

Question 10

Speed wire devices will only accept a 14 AWG solid copper conductor.
Select one:
True
False

Answer 10

True

Question 11

Speed wire terminations are primarily used on ? grade of wiring devices.
Select one:

a. commercial

b.hospital

c.residential

d. spec

e.all of the above

Answer 11

residential

Question 12

A device’s mounting strap’s primary functions are ? .
Select one:

a. grounding and marking

b.grounding, marking, and stabilizing

c. grounding, marking, mounting, stabilizing

d. mounting and stabilizing

Answer 12

grounding, marking, mounting, stabilizing

Question 13

Which of the following components serves as a wiring device’s primary ground-fault return path?
Select one:

a.Actuator

b.Face (cover)

c.Mounting strap

d.Terminal screw

e.None of the above

Answer 13

Mounting strap

Question 14

Which of following markings might appear on the mounting strap of a standard wiring device?
Select one:

a.3rd Party Test Compliance

b.Manufacturer’s ID

c.Point of Manufacture

d.Wire Rating

e.All of the above

Answer 14

All of the above

Question 15

Receptacle current contacts are typically offered in what two primary designs?
Select one:

a.Conductive and non-conductive
Incorrect

b.Double-wipe and triple-wipe
Correct

c.Single-wipe and double-wipe
Incorrect

d.Single-wipe and triple-wipe
Incorrect

e.None of the above

Answer 15

Double-wipe and triple-wipe
Correct

Question 16

Receptacle contacts are offered in four primary designs to accommodate different configurations based on the amperage and voltage of a device.
Select one:
True
False

Answer 16

False

Question 17

The actuator on a switch comes in ? different basic styles.

Select one:

a.3

b.5

c.7

d.8

e.10

Answer 17

8

Question 18

Which of the following is a primary function of a receptacle face?
Select one:

a.Inhibit mis-mating of differently rated devices

b.Matching a room’s color palette

c.Promote the manufacturer’s brand name

d.All of the above

Answer 18

Inhibit mis-mating of differently rated devices

Question 19

In accordance with the NEC, which of the following is true?

a. Receptacles must be listed.Incorrect

b. Receptacles must be marked with the manufacturer’s name or identification.Incorrect

c. Receptacles must be marked with their voltage and ampere rating.

d. All of the above

Answer 19

All of the above

Question 20

Which of the following is a certification mark that could appear on a wiring device?
Select one:

a.CSA

b.NCAA

c.UAW

d.None of the above

Answer 20

CSA