Unused raceway or cable openings in boxes and conduits must be closed so that the protection provided is which of the following:
AAt least equal to the protection provided by the wall of the box or conduit
BEqual to the depth of the wall framing
CGreater than the protection provided by the box or conduit alone
DAdequate to act as a fire stop
#22
The fire rating for walls, floors and doors containing equipment over 600 volts nominal shall be a minimum of which of the following:
A1 hour
B2 hours
C3 hours
D6 hours
#23
Often, equipment and terminations are labeled with which of the following:
AThe initials of the installer
BService tag
CTightening torque
DWiring designations
#24
Ventilation system electrical controls shall be installed in manner in which the airflow can be managed in which of the following ways:
AVented to the outside
BReversed
CLimited upon demand
DPrevented
#25
In order to be electrically secure prior to soldering, splices must be which of the following:
ASanded
BJoined mechanically
CFree of rough edges
DCoated with flux
#26
Unless otherwise specified, live parts for electrical equipment operating at ____ volts or more shall be guarded.
A50
B100
C150
D200
#27
Concrete and brick walls are considered which of the following:
ADry locations
BInsulators
CWet locations
DGrounded
#28
If a conductor material is not specified in a particular Article or Section, the material shall be assumed to be which of the following:
ACopper
BAluminum
CCopper-clad aluminum
DNo assumptions shall be made
#29
A high-let conductor in a three-phase, 4-wire delta secondary shall be which of the following colors:
AWhite
BOrange
CGreen
DBlack
#30
Conductor sizes are listed in which of the following:
ACircular mils
BDiameter or thickness
CAWG or millimeters
DAWG or circular mils
#31
A single-family dwelling has three bathrooms each with the following: a lighting fixture, a fan, and one receptacle outlet. In one of the bathrooms, the lighting fixture, fan, and receptacle outlet are installed on a dedicated 20 ampere circuit. For this dwelling, the minimum number of 20 ampere circuits required to serve the bathrooms is which of the following:
ATwo
BThree
CFour
DFive
#32
One building is supplied power from another building on a non-industrial property with a single owner. The underground feeder is protected by a 100 ampere circuit breaker in the first building. Qualified persons are not always available to service the installation; therefore, the disconnecting means for the second building must be which of the following:
ALocated inside the second building, and is not required to be located near the point where the conductors enter the building
BAt the closest practical point where the conductors enter the building, and may be located either inside or outside of the building
CThe circuit breaker in the first building
DLocated on the outside of the building, near the point where the conductors enter the building
#33
In a single-phase, 3-wire electrical system, the middle conductor must be which of the following:
AHot
BGrounded
CUngrounded
DOut-of-phase
#34
In a 3-wire, single phase electrical system, the nominal voltage must be 120 volts between the ungrounded conductor and the neutral, and the volts between the two ungrounded conductors must be which of the following:
A120 volts
B240 volts
C288 volts
D600 volts
#35
In a single-phase, 3-wire electrical system, the hot conductors are referred to as which of the following:
ANeutral conductors
BGrounded conductors
CNominal conductors
DUngrounded conductors
#36
The exposed non-current carrying metal parts of a hand-held cord-and-plug drill must be grounded in which of the following scenarios:
AThe power source is greater than 150 volts to ground
BThe drill is for residential use
CThe drill is being used in a hazardous location
DAll of these
#37
Terminals connected to a grounded conductor shall be identified in which of the following ways:
AIdentification shall be substantially white in color
BConnection must use a terminal screw that is not readily removable and is green in color
CIdentification must include an engraved metal tag
DNone of these
#38
The receptacle example listed below which may be connected to a small appliance branch circuit is which of the following:
AGarage ceiling receptacle for an automatic garage door opener
BAny receptacle which is within 3600 mm of the kitchen
CAn electric clock plugged in at the dining room
DAn electric hair dryer
#39
The service disconnection means in a building shall not have more than how many switches or circuit breakers:
A6
B8
C10
D20
#40
The total number of underground conductors for an outside lighting circuit on a single common neutral conductor is which of the following:
A6
B8
CThere is no limit specified
DUnderground conductors specified in this example are prohibited
