G16 Master Electrician Exam
Question 1
A conductor with a white or gray outer finish is generally used for which purpose?
A. Grounding conductor
B. Ungrounded (hot) conductor
C. Neutral (grounded) conductor
D. Equipment bonding conductor
Correct Answer: C
Explanation: According to the NEC, white or gray insulation typically identifies the neutral
(grounded) conductor.
Question 2
When local electrical codes differ from the National Electrical Code (NEC), which standard
usually takes precedence?
A. Always NEC
B. The more stringent requirement
C. The most recent NEC edition
D. Manufacturer recommendations
Correct Answer: B
, G16 Master Electrician Exam
Explanation: In most jurisdictions, if local codes are more stringent than the NEC, they take
precedence to ensure higher safety standards.
Question 3
According to the NEC, how often is the National Electrical Code updated?
A. Every year
B. Every three years
C. Every five years
D. Every ten years
Correct Answer: B
Explanation: The NEC is revised on a three-year cycle to incorporate emerging technologies and
safety findings.
Question 4
Which article of the NEC specifically covers grounding and bonding requirements?
A. Article 250
B. Article 110
C. Article 430
D. Article 210
, G16 Master Electrician Exam
Correct Answer: A
Explanation: Article 250 of the NEC deals with grounding and bonding requirements in electrical
installations.
Question 5
Which organization publishes the National Electrical Code?
A. Occupational Safety and Health Administration (OSHA)
B. National Fire Protection Association (NFPA)
C. Institute of Electrical and Electronics Engineers (IEEE)
D. Underwriters Laboratories (UL)
Correct Answer: B
Explanation: The NEC is published by the NFPA, also known as NFPA 70.
Question 6
What is the primary purpose of the NEC?
A. Provide design guidelines for electricians
B. Establish electrical safety standards for installations
C. Promote energy-efficient building designs
D. Define standard wiring color codes
, G16 Master Electrician Exam
Correct Answer: B
Explanation: The NEC’s main aim is to ensure the safe installation of electrical wiring and
equipment.
Question 7
Which statement best describes the role of the Authority Having Jurisdiction (AHJ)?
A. Determines the schedule of electrical inspections
B. Enforces local safety codes and approves installations
C. Issues manufacturer warranties
D. Oversees labor union contracts
Correct Answer: B
Explanation: The AHJ enforces codes and has the final say on approving or rejecting electrical
installations.
Question 8
Under NEC guidelines, when is it acceptable to install a fuse in a grounded conductor?
A. Only for three-phase systems
B. Under no circumstances
C. For low-voltage lighting systems
Question 1
A conductor with a white or gray outer finish is generally used for which purpose?
A. Grounding conductor
B. Ungrounded (hot) conductor
C. Neutral (grounded) conductor
D. Equipment bonding conductor
Correct Answer: C
Explanation: According to the NEC, white or gray insulation typically identifies the neutral
(grounded) conductor.
Question 2
When local electrical codes differ from the National Electrical Code (NEC), which standard
usually takes precedence?
A. Always NEC
B. The more stringent requirement
C. The most recent NEC edition
D. Manufacturer recommendations
Correct Answer: B
, G16 Master Electrician Exam
Explanation: In most jurisdictions, if local codes are more stringent than the NEC, they take
precedence to ensure higher safety standards.
Question 3
According to the NEC, how often is the National Electrical Code updated?
A. Every year
B. Every three years
C. Every five years
D. Every ten years
Correct Answer: B
Explanation: The NEC is revised on a three-year cycle to incorporate emerging technologies and
safety findings.
Question 4
Which article of the NEC specifically covers grounding and bonding requirements?
A. Article 250
B. Article 110
C. Article 430
D. Article 210
, G16 Master Electrician Exam
Correct Answer: A
Explanation: Article 250 of the NEC deals with grounding and bonding requirements in electrical
installations.
Question 5
Which organization publishes the National Electrical Code?
A. Occupational Safety and Health Administration (OSHA)
B. National Fire Protection Association (NFPA)
C. Institute of Electrical and Electronics Engineers (IEEE)
D. Underwriters Laboratories (UL)
Correct Answer: B
Explanation: The NEC is published by the NFPA, also known as NFPA 70.
Question 6
What is the primary purpose of the NEC?
A. Provide design guidelines for electricians
B. Establish electrical safety standards for installations
C. Promote energy-efficient building designs
D. Define standard wiring color codes
, G16 Master Electrician Exam
Correct Answer: B
Explanation: The NEC’s main aim is to ensure the safe installation of electrical wiring and
equipment.
Question 7
Which statement best describes the role of the Authority Having Jurisdiction (AHJ)?
A. Determines the schedule of electrical inspections
B. Enforces local safety codes and approves installations
C. Issues manufacturer warranties
D. Oversees labor union contracts
Correct Answer: B
Explanation: The AHJ enforces codes and has the final say on approving or rejecting electrical
installations.
Question 8
Under NEC guidelines, when is it acceptable to install a fuse in a grounded conductor?
A. Only for three-phase systems
B. Under no circumstances
C. For low-voltage lighting systems
