Arizona Contractor License CR-67
Questions and Answers
Electricity may flow only when? - ANSWER-There has to be a for it to return making a
complete circuit
What is the return path for electrical power to flow back to the service panel? -
ANSWER-Neutral
The live wire is always ungrounded? - ANSWER-True. They are very hot caring
electrical power
A ground electrode conductor originates at the neutral or equipment ground bus of the
service panel? - ANSWER-True
A ground electrode should not be made in contact with the earth? - ANSWER-False.
sound be on contact with the earth
Compare Watts with Voltage - ANSWER-Watts are the measure of power. Voltage is
the measure of potential energy.
You should size conductors no less ______ of the continuous loads plus _________ of
the non-continuous loads,. - ANSWER-125% / 100%
Conductor sizes are often expressed in? - ANSWER-American Wire Gage (AWG)
What refers to the allowable current-carrying capacity of a conductor? - ANSWER-
Ampacity
Alternating Current (AC) always flows one way then the other? - ANSWER-True. AC
always flows one way then the other.
The frequency of AC is measured in? - ANSWER-Measured in hertz Hz
What refers to a voltage can convey information? - ANSWER-Electrical Signal
What refers to the maximum voltage that can be reached by a signal? - ANSWER-
Amplitude
The insulation type determines the areas the writers can and cannot used? - ANSWER-
True
, RHH wires use rubber insulation that is high heat resistant and is good in? - ANSWER-
Is only good in dry locations.
RHW-2 wires use the rubber insulation but are suitable for wet locations? - ANSWER-
True
What cables can be used inside wall, ceiling or under the floor. - ANSWER-Non-metallic
(NM)
What cables are most appropriate for damp areas? - ANSWER-Underground feeder
(UF) or Non-metallic Wet underground (NMWU)
THWN means? - ANSWER-Flame retardant, Heat resistant, Moisture resistant,
Gasoline resistant, and oil resistant.
An insulated grounded conductor which is ____ AWG or below should be identified by a
continuous white or gray outer finish. - ANSWER-6 AWG
What is the amount of voltage measured between any two line conductors of a
balanced three-phase system. - ANSWER-Line voltage
What describes the voltage measured across any one component of a balanced three-
phase system. - ANSWER-Phase Voltage
A _______ is unintentional mess up. - ANSWER-Ground Fault
An effective Ground-Fault current path is? - ANSWER-An effective Ground-Fault current
paths a path intentionally constructed to facilitate the operation of the overcurrent
protective devices currently in place.
GFCI is never sensitive to small "leaks" of current - ANSWER-False. GFCI = ground-
fault circuit interrupter
Grounding and bonding means exactly the same thing? - ANSWER-False. Bonding is a
means of allowing electrical continuity between metallic objects.
A typical work space (for a working voltage under 600V) should have a minimum
headroom of ______ m. - ANSWER-2.0 m
typically there are ____ hot wires running from the utility company into the service
panel. - ANSWER-2
A service disconnect need to have a rating which is? - ANSWER-No less than that the
calculated load or for the type of installation
Questions and Answers
Electricity may flow only when? - ANSWER-There has to be a for it to return making a
complete circuit
What is the return path for electrical power to flow back to the service panel? -
ANSWER-Neutral
The live wire is always ungrounded? - ANSWER-True. They are very hot caring
electrical power
A ground electrode conductor originates at the neutral or equipment ground bus of the
service panel? - ANSWER-True
A ground electrode should not be made in contact with the earth? - ANSWER-False.
sound be on contact with the earth
Compare Watts with Voltage - ANSWER-Watts are the measure of power. Voltage is
the measure of potential energy.
You should size conductors no less ______ of the continuous loads plus _________ of
the non-continuous loads,. - ANSWER-125% / 100%
Conductor sizes are often expressed in? - ANSWER-American Wire Gage (AWG)
What refers to the allowable current-carrying capacity of a conductor? - ANSWER-
Ampacity
Alternating Current (AC) always flows one way then the other? - ANSWER-True. AC
always flows one way then the other.
The frequency of AC is measured in? - ANSWER-Measured in hertz Hz
What refers to a voltage can convey information? - ANSWER-Electrical Signal
What refers to the maximum voltage that can be reached by a signal? - ANSWER-
Amplitude
The insulation type determines the areas the writers can and cannot used? - ANSWER-
True
, RHH wires use rubber insulation that is high heat resistant and is good in? - ANSWER-
Is only good in dry locations.
RHW-2 wires use the rubber insulation but are suitable for wet locations? - ANSWER-
True
What cables can be used inside wall, ceiling or under the floor. - ANSWER-Non-metallic
(NM)
What cables are most appropriate for damp areas? - ANSWER-Underground feeder
(UF) or Non-metallic Wet underground (NMWU)
THWN means? - ANSWER-Flame retardant, Heat resistant, Moisture resistant,
Gasoline resistant, and oil resistant.
An insulated grounded conductor which is ____ AWG or below should be identified by a
continuous white or gray outer finish. - ANSWER-6 AWG
What is the amount of voltage measured between any two line conductors of a
balanced three-phase system. - ANSWER-Line voltage
What describes the voltage measured across any one component of a balanced three-
phase system. - ANSWER-Phase Voltage
A _______ is unintentional mess up. - ANSWER-Ground Fault
An effective Ground-Fault current path is? - ANSWER-An effective Ground-Fault current
paths a path intentionally constructed to facilitate the operation of the overcurrent
protective devices currently in place.
GFCI is never sensitive to small "leaks" of current - ANSWER-False. GFCI = ground-
fault circuit interrupter
Grounding and bonding means exactly the same thing? - ANSWER-False. Bonding is a
means of allowing electrical continuity between metallic objects.
A typical work space (for a working voltage under 600V) should have a minimum
headroom of ______ m. - ANSWER-2.0 m
typically there are ____ hot wires running from the utility company into the service
panel. - ANSWER-2
A service disconnect need to have a rating which is? - ANSWER-No less than that the
calculated load or for the type of installation
