Arizona Contractor License CR-67 Exam Questions
with Correct Verified Answers | Latest Update
2026/2027 | Graded A+ | 100% Assured Pass.
System grounding is required when you have a supply transformer of a
SOV or lower system?
ANSWERS: System grounding is required when you have a supply
transformer of a 50V or lower system which itself is supplied from a
source over 150V to the ground
On a class 1 circuit it is ok to use smaller wire sizes than normal power
circuits such as.
ANSWERS: Anything 16 AWG or lower
Class 1 signaling and remote control circuits are limited too?
ANSWERS: 600 Volts
When a circuit controls equipment can introduce a direct life safety
hazard, the circuit has to be?
ANSWERS: Class 1
Class 2 circuit must be kept separate from lighting?
ANSWERS: True
,Generally, cables that are installed in ducts for environment air should
be of what type?
ANSWERS: CL2P or CL3P
Cables installed in building locations other than in plenums for
environmental air may be?
ANSWERS: CL2 or CL3
Voltage drop can be calculated based on?
ANSWERS: Voltage drop = (2) x (the circuit length in ft) x (resistance per 1
ft) x (current)
Class 2 circuits.
ANSWERS: Class 2 circuits may not be derived from a large transformer
by using fuses.
, The pulling tension in pounds for a copper wire should not exceed how
many times the circular mil area of a conductor?
ANSWERS: .008 mil
The breaking capacity specifies.
ANSWERS: maximum current the fuse can handle
_____ occurs when there are two points in the circuit accidentally coming
in contact.
ANSWERS: Short circuit
Circuits of 30A may be used to serve fixed lighting units with heavy-
duty Iampholders in non-dwellings units.
ANSWERS: True
Circuits of 40A may be used to serve fixed lighting with heavy-duty
Iampholders in fixed cooking appliances.
ANSWERS: True
with Correct Verified Answers | Latest Update
2026/2027 | Graded A+ | 100% Assured Pass.
System grounding is required when you have a supply transformer of a
SOV or lower system?
ANSWERS: System grounding is required when you have a supply
transformer of a 50V or lower system which itself is supplied from a
source over 150V to the ground
On a class 1 circuit it is ok to use smaller wire sizes than normal power
circuits such as.
ANSWERS: Anything 16 AWG or lower
Class 1 signaling and remote control circuits are limited too?
ANSWERS: 600 Volts
When a circuit controls equipment can introduce a direct life safety
hazard, the circuit has to be?
ANSWERS: Class 1
Class 2 circuit must be kept separate from lighting?
ANSWERS: True
,Generally, cables that are installed in ducts for environment air should
be of what type?
ANSWERS: CL2P or CL3P
Cables installed in building locations other than in plenums for
environmental air may be?
ANSWERS: CL2 or CL3
Voltage drop can be calculated based on?
ANSWERS: Voltage drop = (2) x (the circuit length in ft) x (resistance per 1
ft) x (current)
Class 2 circuits.
ANSWERS: Class 2 circuits may not be derived from a large transformer
by using fuses.
, The pulling tension in pounds for a copper wire should not exceed how
many times the circular mil area of a conductor?
ANSWERS: .008 mil
The breaking capacity specifies.
ANSWERS: maximum current the fuse can handle
_____ occurs when there are two points in the circuit accidentally coming
in contact.
ANSWERS: Short circuit
Circuits of 30A may be used to serve fixed lighting units with heavy-
duty Iampholders in non-dwellings units.
ANSWERS: True
Circuits of 40A may be used to serve fixed lighting with heavy-duty
Iampholders in fixed cooking appliances.
ANSWERS: True
