Deck 2: Electrical Symbols and Outlets

Question 1

Unused knockouts in boxes, spaces for ____________________ in a panel, meter socket enclosures, and all other similar equipment must be effectively closed.

Answer 1

circuit breakers

Question 2

Device faceplates must be mounted so as to ____.

A) cover the opening in the wall
B) seat against the wall surface
C) be parallel to lines in tile and similar wall finishes
D) both a and b

Answer 2

D

Question 3

Draw the symbol for a duplex receptacle.

Answer 3

Question 4

How is an outlet defined by the NEC?

Question 5

Lighting outlet boxes are designed for size No. ____________________ screws.

Question 6

In walls or ceilings constructed of noncombustible material, such as concrete or tile, the edge of the outlet box is permitted to be set back not more than ____________________ from the finished surface.

Question 7

Name several factors that must be taken into account when sizing boxes per the NEC.

Question 8

According to ____, unused knockouts and other openings in electrical boxes and cabinets are required to be closed.

A) Article 100
B) NEC 110.12(A)
C) NEC 408.7
D) NEC 314.21

Question 9

Receptacles are not permitted to be mounted directly over ____________________ heaters in residential construction.

Question 10

In order that the connections inside an outlet box remain accessible, the NEC requires that a surface extension from an outlet box cover be made using ____.

A) flexible conduit
B) cable
C) nonmetallic raceway
D) either a or b

Question 11

Which piece of electrical equipment is NOT considered a device?

A) receptacle
B) three-way switch
C) lamp
D) disconnect switch

Question 12

A device's primary function is to ____.

A) utilize electric energy
B) control electric energy
C) transform electric energy
D) act as a resistor

Question 13

Explain the requirements for installing a lighting fixture weighing more than fifty pounds.

Question 14

A receptacle outlet is a(n) ____.

A) contact device for the connection of an attachment plug
B) outlet intended for the connection of a utilization device
C) outlet where one or more receptacles are installed
D) outlet intended for the direct connection of a lampholder

Question 15

Electrical wall boxes should not be mounted back-to-back in walls because ____.

A) sound may be transmitted from room to room
B) it reduces the fire resistance of the wall
C) the practice violates building codes
D) all of these

Question 16

The NEC requires that a(n) ____ be installed at each conductor splice connection point.

A) insulated wire connector
B) box or conduit body
C) grounding electrode conductor (ground wire)
D) duplex receptacle outlet

Question 17

What is meant by fire resistance rating?

Question 18

When doing ____________________ work, requirements for supporting and securing cables are relaxed so that the cables can be "fished" through the existing wall construction.

Question 19

Device boxes are designed for size No. ____________________ screws.

Question 20

Where noncombustible surface material is used on walls or ceilings, outlet boxes must be mounted so that they will be set back not more than ____ from the face of the surface material.

A) 1/16 in. (1.5 mm)
B) 1/8 in. (3 mm)
C) 1/4 in. (6 mm)
D) 1/2 in. (12 mm)

Question 21

Match the following switch types with their drawing symbols.
a.S₄
b.S_DS
c.S
d.S₃
Three-way

Question 22

Match the following switch types with their drawing symbols.
a.S₄
b.S_DS
c.S
d.S₃
Single-pole

Question 23

Match the following switch types with their drawing symbols.
a.S₄
b.S_DS
c.S
d.S₃
Dimmer switch

Question 24

Match the following switch types with their drawing symbols.
a.S₄
b.S_DS
c.S
d.S₃
Four-way