NEVADA (NV) C-2D LOW VOLTAGE
PRACTICE EXAM 2026/2027 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |CURRENTLY TESTING
QUESTIONS AND SOLUTIONS|ALREADY
GRADED A+|NEWEST|JUST
RELEASED!!|GUARANTEED PASS
Question 1
Which system is specifically included under a Nevada C-2D Low Voltage license?
A. 480-volt motor control centers
B. Fire alarm initiating and notification circuits
C. Medium-voltage feeders above 600V
D. Utility power distribution
Correct Answer: B
Explanation: The C-2D classification covers low-voltage systems such as fire alarm,
communications, data, security, and signaling systems. High-voltage power distribution
and motor control systems fall under different classifications.
Question 2
Low-voltage systems under the C-2D license are generally limited to a maximum of:
A. 30 volts
B. 50 volts
C. 90 volts
D. 600 volts
1|Page
, Correct Answer: C
Explanation: Nevada defines low-voltage systems as those operating at 90 volts or less,
which aligns with Class 2 and Class 3 circuit definitions under the NEC.
Question 3
Which NEC article primarily governs fire alarm systems?
A. Article 725
B. Article 760
C. Article 800
D. Article 300
Correct Answer: B
Explanation: NEC Article 760 specifically covers fire alarm circuits, including
power-limited and non-power-limited fire alarm wiring requirements.
Question 4
A Class 2 power-limited circuit is designed to:
A. Deliver unlimited current at low voltage
B. Prevent fire initiation through current limitation
C. Supply power to HVAC equipment
D. Operate above 100 volts
Correct Answer: B
Explanation: Class 2 circuits are inherently power-limited, meaning their voltage and
current are restricted to reduce the risk of fire and electric shock.
Question 5
Which document must a licensed C-2D contractor comply with in addition to the NEC?
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, A. OSHA regulations only
B. Local building and fire codes
C. Utility company standards only
D. Federal aviation regulations
Correct Answer: B
Explanation: Nevada contractors must comply with the NEC and all applicable local building
and fire authority requirements, which may be more restrictive.
Question 6
Who enforces contractor licensing requirements in Nevada?
A. Nevada Department of Labor
B. Nevada State Contractors Board (NSCB)
C. Nevada Secretary of State
D. OSHA
Correct Answer: B
Explanation: The Nevada State Contractors Board regulates licensing, discipline, and
compliance for all contractors in the state.
Question 7
What is the minimum passing score required on Nevada contractor trade exams?
A. 60%
B. 65%
C. 70%
D. 75%
Correct Answer: C
Explanation: Nevada contractor exams generally require a minimum score of 70% to
pass.
3|Page
, Question 8
Which system would NOT fall under a C-2D license?
A. CCTV surveillance system
B. Structured data cabling
C. Nurse call system
D. 277-volt lighting circuit
Correct Answer: D
Explanation: Lighting circuits at 277 volts exceed the low-voltage limit and require an
electrical (C-2) classification.
Question 9
According to OSHA, which is the best method to prevent electrical shock during installation?
A. Wearing cotton gloves
B. Lockout/tagout of energized circuits
C. Using insulated ladders only
D. Working quickly
Correct Answer: B
Explanation: Lockout/tagout ensures circuits are de-energized, which is the most
effective way to prevent electrical shock.
Question 10
Plenum-rated cable is required when wiring is installed:
A. Inside electrical conduit
B. In walls only
4|Page
PRACTICE EXAM 2026/2027 WITH ACTUAL
CORRECT QUESTIONS AND VERIFIED
DETAILED ANSWERS |CURRENTLY TESTING
QUESTIONS AND SOLUTIONS|ALREADY
GRADED A+|NEWEST|JUST
RELEASED!!|GUARANTEED PASS
Question 1
Which system is specifically included under a Nevada C-2D Low Voltage license?
A. 480-volt motor control centers
B. Fire alarm initiating and notification circuits
C. Medium-voltage feeders above 600V
D. Utility power distribution
Correct Answer: B
Explanation: The C-2D classification covers low-voltage systems such as fire alarm,
communications, data, security, and signaling systems. High-voltage power distribution
and motor control systems fall under different classifications.
Question 2
Low-voltage systems under the C-2D license are generally limited to a maximum of:
A. 30 volts
B. 50 volts
C. 90 volts
D. 600 volts
1|Page
, Correct Answer: C
Explanation: Nevada defines low-voltage systems as those operating at 90 volts or less,
which aligns with Class 2 and Class 3 circuit definitions under the NEC.
Question 3
Which NEC article primarily governs fire alarm systems?
A. Article 725
B. Article 760
C. Article 800
D. Article 300
Correct Answer: B
Explanation: NEC Article 760 specifically covers fire alarm circuits, including
power-limited and non-power-limited fire alarm wiring requirements.
Question 4
A Class 2 power-limited circuit is designed to:
A. Deliver unlimited current at low voltage
B. Prevent fire initiation through current limitation
C. Supply power to HVAC equipment
D. Operate above 100 volts
Correct Answer: B
Explanation: Class 2 circuits are inherently power-limited, meaning their voltage and
current are restricted to reduce the risk of fire and electric shock.
Question 5
Which document must a licensed C-2D contractor comply with in addition to the NEC?
2|Page
, A. OSHA regulations only
B. Local building and fire codes
C. Utility company standards only
D. Federal aviation regulations
Correct Answer: B
Explanation: Nevada contractors must comply with the NEC and all applicable local building
and fire authority requirements, which may be more restrictive.
Question 6
Who enforces contractor licensing requirements in Nevada?
A. Nevada Department of Labor
B. Nevada State Contractors Board (NSCB)
C. Nevada Secretary of State
D. OSHA
Correct Answer: B
Explanation: The Nevada State Contractors Board regulates licensing, discipline, and
compliance for all contractors in the state.
Question 7
What is the minimum passing score required on Nevada contractor trade exams?
A. 60%
B. 65%
C. 70%
D. 75%
Correct Answer: C
Explanation: Nevada contractor exams generally require a minimum score of 70% to
pass.
3|Page
, Question 8
Which system would NOT fall under a C-2D license?
A. CCTV surveillance system
B. Structured data cabling
C. Nurse call system
D. 277-volt lighting circuit
Correct Answer: D
Explanation: Lighting circuits at 277 volts exceed the low-voltage limit and require an
electrical (C-2) classification.
Question 9
According to OSHA, which is the best method to prevent electrical shock during installation?
A. Wearing cotton gloves
B. Lockout/tagout of energized circuits
C. Using insulated ladders only
D. Working quickly
Correct Answer: B
Explanation: Lockout/tagout ensures circuits are de-energized, which is the most
effective way to prevent electrical shock.
Question 10
Plenum-rated cable is required when wiring is installed:
A. Inside electrical conduit
B. In walls only
4|Page
