CH 112
Injuries should be reported to your supervisor ___. Select one: a.within 24 hours b.within 48 hours c.within 72 hours d.immediately
d. immediately
A device with a L7-20P NEMA designation indicates that the device is rated for operation at ___ amps. Select one: a.30 b.60 c.50 d.15 e.20
e. 20
The essential elements of good housekeeping are ___. Select one: a.locating extension cords, air and water lines, welding leads, and hoses in positions that eliminate tripping hazards b.placing containers at appropriate locations for the disposal of miscellaneous rubbish c.prompt removal and disposal of trash and waste materials d.orderly placement of materials, tools, and equipment e.all of these
e. all of these
It is permitted to refuel ___-powered equipment while it is running.I. diesel II. gasoline III. propane Select one: a.I or II or III b.I only c.III only d.I or III only e.neither I nor II nor III
e. neither I or II or III
The NEC® requires that tamper-resistant receptacles be used in ___. Select one: a.restaurants b.hospital operating rooms c.movie theatres d.psychiatric facilities e.none of these
e. none of these
CO/ALR
A 15A or 20A receptacle designated for use with aluminum or copper circuit conductors, identified by "CO/ALR" stamped on the device.
AL/CU
A 30A, 50A or 60A receptacle designated for use with aluminum or copper circuit conductors, identified by "AL/CU" stamped on the device.
residential grade receptacle
A device ideal for new construction or replacement use in any residential structure.
commercial grade receptacle
A device intended to meet the demands of commercial and institutional settings.
industrial grade receptacle
A device meant for use in punishing environments like factories and other industrial settings.
receptacle
A device with female contacts designed for fixed installation in a structure or piece of equipment and which is intended to establish electrical connection with an inserted plug.
plug
A device with male contacts intended for insertion into a receptacle to establish electrical connection between the attached flexible cord and the conductors connected to the receptacle.
cord connector
A portable receptacle designed for attachment to or provided with flexible cord, not intended for fixed mounting.
hospital grade receptacle
A receptacle designed to meet the performance requirements of high-abuse areas typically found in health-care facilities.
safety or tamper-resistant receptacle
A receptacle specially constructed so that access to its energized contacts is limited.
single receptacle
A receptacle that accepts only one plug.
duplex receptacle
A receptacle that has two female contacts on a single yoke.
double-pole switch
A switch with two blades and contacts for opening or closing both sides of an electrical circuit simultaneously.
Where installed in conduit, which of the following wire colors are permitted for "hots," travelers, and switch legs of a circuit?I. black, red, and blue II. brown, orange, and yellow III. pink, black, and blue Select one: a.I or II or III b.I only c.I or II only d.II only e.neither I nor II nor III
A. I, II, or III
To convert a conventional duplex receptacle into a split-wired receptacle, the ___ is removed. Select one: a.tab b.silver colored screw c.ground screw d.brass colored screw
A. Tab
When installed as the neutral for a 120-volt circuit, the neutral is considered to be a current-carrying conductor. Select one: a.True b.False
A. True
Is it permitted to control a 120-volt incandescent (tungsten filament) lighting circuit with a switch rated for 15 A and 120-277 V? The circuit has 9 fixtures and each fixture will have a 200 W, 120-V lamp installed in it. Select one: a.Yes b.No
A. Yes
CO/ALR switches must be used when aluminum building wire is to be terminated. Select one: a.True b.False
A. true
single-pole switch
An electrical control device with one movable and one fixed contact, used to turn lights or appliances ON and OFF from a single location.
switch
An electrical device used to control the flow of electricity through a circuit or change the connection of a circuit.
four-way switch
An electrical switch used in conjunction with two three-way switches to provide control of a circuit from three or more locations.
three-way switch
An electrical switch used to control a fixture from two different locations, such as two ends of a hallway.
configuration
An indicator of the number of poles, the number of wires, the voltage, and 1Φ or 3Φ.
The neutral conductor of a 120-volt circuit is referred to as the ___ conductor in the NEC®. Select one: a.grounding b.grounded c.ungrounded d.shared
B. Grounded
What conductor in a circuit cannot be marked with a color of white or gray?I. grounded II. equipment grounding III. ungrounded Select one: a.I only b.II & III only c.I & II only d.II only e.III only
B. II & III Only
A luminaire has one blue wire and one white wire for field connection. When using cable (NM, AC, or MC for example), the wire connected to the blue wire from the luminaire ___. Select one: a.can be white with colored tape b.must have colored insulation (not green or white or gray) c.either a or b
B. Must have colored insulation (not green or white or gray)
Lighted handle toggle switches utilize a neon lamp that is illuminated when the switch is in the ___ position. Select one: a.ON b.OFF c.either a or b
B. Off
A single-pole, double-throw switch has ___ screw terminals for the connection of current-carrying circuit conductors. Select one: a.four b.three c.two d.six
B. Three
For stairway lighting, a typical installation is to install a 3-way switching system. For a commercial building, ___ for stairway lighting control. Select one: a.this satisfies the NEC® requirement b.there are no NEC® requirements
B. there are no
Which of these is the symbol used for a 4-way switch? a.$3 b.$2 c.$4 d.$
C $4
Which of the following is an example of a "device?" Select one: a.dishwasher b.air conditioner c.GFCI receptacle d.all of these
C. GFCI Receptacle
The ungrounded conductor is often called the ___. Select one: a.neutral b.bond c.hot d.ground
C. Hot
What type of switch would you use to control a lighting load from one location only? Select one: a.relay switch b.Four way c.Single pole d.Three way Feedback
C. Single Pole
The "hot" conductor of a circuit is referred to as the ___ conductor in the NEC®. Select one: a.grounding b.grounded c.ungrounded d.shared Feedback
C. Ungrounded
An insulated grounded conductor of 6 AWG or smaller shall be identified by a continuous white or gray outer finish or by ___ continuous white stripes on other than green insulation along its entire length. Select one: a.4 b.2 c.1 d.3
D. 3
The color of the insulation of a neutral conductor that is 8 AWG shall be ___.I. white II. bare III. gray Select one: a.I only b.III only c.II only d.I or III only e.I or II only f.II or III only
D. I or III Only
What conductor in a circuit can be marked with a green color?I. grounded II. equipment grounding III. ungrounded Select one: a.I only b.II & III only c.I & II only d.II only e.III only
D. II Only
SPST is an abbreviation for ___. Select one: a.Double Pole-Double Throw b.Single Pole-Double Throw c.Double Pole-Single Throw d.Single Pole-Single Throw
D. Single Pole-Single Throw
The Code section that addresses sensor (automatic) control of lighting in a restaurant bathroom is ___. Select N/A (not applicable) if there is not a Code reference for this. Select one: a.210.70(A)(1) Exc 2 b.210.8(A)(1) c.210.8(B)(1) d.210.70(A)(2) e.N/A
E. N/A
Switches that are rated for AC-DC produce a "snapping" sound when the toggle is operated. Select one: a.True b.False
a. true
A branch circuit supplies 6 receptacles. The branch circuit originates in a 120/240-volt 1Ø, 3-wire panelboard. The 14 AWG circuit conductors are connected to a 15-A circuit breaker. The receptacles are permitted to be rated ___.I. 15 amperes II. 20 amperes Select one: a.I only b.II only c.either I or II d.neither I nor II
a. I only
A receptacle with a terminal marked with a W requires the connection of a ___ conductor to this terminal. Select one: a.grounded b.3-phase ungrounded c.grounding
a. grounded
A circuit breaker is a switch that when in the "off" position ___ the circuit. Select one: a.opens b.closes
a. opens
SPST switches are commonly called "___" switches. Select one: a.single-pole b.double-pole c.three-way d.four-way
a. single
The NEC® specifies that tamper-resistant receptacles be installed in kindergarten classrooms. Select one: a.True b.False
a. true
Grounding is covered in Article ___ in the NEC®. Select one: a.110 b.250 c.210 d.200
b. 250
Which of these receptacles is permitted to be connected to a 20-amp, 120-volt branch circuit that supplies power to this receptacle only?I. 15-amp II. 20-amp Select one: a.I only b.II only c.either I or II d.neither I nor II
b. II only
Tools and equipment should be removed from the ___ of a pickup truck. Select one: a.sides b.back c.either a or b d.neither a nor b
b. back
If you need more than two switches to control a light, you will need at least one: Select one: a.single-pole switch b.four-way switch c.receptacle d.timer switch
b. four way
When a single receptacle of any rating is installed on an individual branch circuit, the receptacle rating must not be ___ than the rating of the branch circuit. Select one: a.more b.less
b. less
If a receptacle has a NEMA designation that is L8-30R, this indicates that the receptacle can be mated with a ___-type plug attached to a flexible cord. Select one: a.straight-blade b.locking
b. locking
Locking-type plugs require ___ to separate the plug from the receptacle. Select one: a.a key b.turning and pulling c.that the circuit be de-energized d.that the ground be removed first Feedback
b. turning and pulling
Light switches (toggle switches) are rated for the maximum ___.I. voltage II. current Select one: a.I only b.II only c.both I & II d.neither I nor II
c. both I & II
A ___ switch is permitted to be used to control a 120-volt fluorescent lighting circuit. Select one: a.120-277 V b.120 V c.either a or b d.neither a nor b
c. either A or B
A branch circuit that supplies 4 receptacles originates in a 120/240-volt 1Ø, 3-wire panelboard. The 12 AWG circuit conductors are connected to a 20-A circuit breaker. The receptacles are permitted to be rated ___.I. 20 amperes II. 15 amperes Select one: a.I only b.II only c.either I or II d.neither I nor II
c. either I or II
For the connection of current-carrying circuit conductors, a DPST switch has ___ screw terminals. Select one: a.two b.six c.four d.three
c. four
For lighting circuits, NEC® Section 404.2(C) requires a(n) ___ conductor to be provided in each switch box or enclosure. Select one: a.ungrounded b.designated c.grounded d.grounding
c. grounded
Receptacles for use on nominal 120-volt circuits are marked ___ volts. Select one: a.110 b.115 c.120 d.125
d. 125
How many 4-way switches are required to control a light from five locations? Select one: a.4 b.2 c.5 d.3 e.1
d. 3
