New Jersey Electrical Contractor Examination
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
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1. What is the primary purpose of the National Electrical Code
(NEC)?
A. To provide design guidelines only
B. To ensure uniformity in electrical materials
C. To safeguard persons and property from hazards arising from
electricity
D. To regulate utility company operations
The NEC’s stated purpose is safety, not design preference or utility
regulation.
2. In New Jersey, electrical contractors are primarily regulated by
which authority?
A. Local municipalities only
B. New Jersey Board of Examiners of Electrical Contractors
C. Department of Community Affairs only
D. OSHA
Licensing and oversight are handled by the state Board.
3. What is the minimum age requirement to hold an electrical
contractor license in New Jersey?
A. 18
B. 21
, C. 25
D. No minimum age
State licensing law requires contractors to be at least 21.
4. Which NEC article covers definitions used throughout the Code?
A. Article 90
B. Article 100
C. Article 110
D. Article 250
Article 100 contains all NEC definitions.
5. What does NEC Article 110 primarily address?
A. Grounding methods
B. Wiring methods
C. Requirements for electrical installations
D. Overcurrent protection
Article 110 sets general installation and approval requirements.
6. Which conductor is intentionally connected to earth in a grounded
system?
A. Equipment grounding conductor
B. Ungrounded conductor
C. Grounded conductor
D. Bonding jumper
The grounded conductor (neutral) is intentionally grounded.
7. What color insulation is typically used for grounded conductors
under 600 volts?
A. Green
B. Red
C. White or gray
, D. Black
White or gray identifies grounded conductors.
8. Green insulation identifies which type of conductor?
A. Grounded conductor
B. Ungrounded conductor
C. Equipment grounding conductor
D. Neutral conductor
Green is reserved for equipment grounding conductors.
9. What is the maximum voltage to ground permitted for residential
branch circuits?
A. 120 volts
B. 150 volts
C. 208 volts
D. 240 volts
Residential systems are typically limited to 150V to ground.
10. What NEC article covers branch circuits?
A. Article 210
B. Article 210
C. Article 215
D. Article 220
Article 210 governs branch circuits.
11. What is the minimum ampere rating for a general-purpose
receptacle circuit in a dwelling?
A. 10 amps
B. 15 amps
C. 20 amps
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of the National Electrical Code
(NEC)?
A. To provide design guidelines only
B. To ensure uniformity in electrical materials
C. To safeguard persons and property from hazards arising from
electricity
D. To regulate utility company operations
The NEC’s stated purpose is safety, not design preference or utility
regulation.
2. In New Jersey, electrical contractors are primarily regulated by
which authority?
A. Local municipalities only
B. New Jersey Board of Examiners of Electrical Contractors
C. Department of Community Affairs only
D. OSHA
Licensing and oversight are handled by the state Board.
3. What is the minimum age requirement to hold an electrical
contractor license in New Jersey?
A. 18
B. 21
, C. 25
D. No minimum age
State licensing law requires contractors to be at least 21.
4. Which NEC article covers definitions used throughout the Code?
A. Article 90
B. Article 100
C. Article 110
D. Article 250
Article 100 contains all NEC definitions.
5. What does NEC Article 110 primarily address?
A. Grounding methods
B. Wiring methods
C. Requirements for electrical installations
D. Overcurrent protection
Article 110 sets general installation and approval requirements.
6. Which conductor is intentionally connected to earth in a grounded
system?
A. Equipment grounding conductor
B. Ungrounded conductor
C. Grounded conductor
D. Bonding jumper
The grounded conductor (neutral) is intentionally grounded.
7. What color insulation is typically used for grounded conductors
under 600 volts?
A. Green
B. Red
C. White or gray
, D. Black
White or gray identifies grounded conductors.
8. Green insulation identifies which type of conductor?
A. Grounded conductor
B. Ungrounded conductor
C. Equipment grounding conductor
D. Neutral conductor
Green is reserved for equipment grounding conductors.
9. What is the maximum voltage to ground permitted for residential
branch circuits?
A. 120 volts
B. 150 volts
C. 208 volts
D. 240 volts
Residential systems are typically limited to 150V to ground.
10. What NEC article covers branch circuits?
A. Article 210
B. Article 210
C. Article 215
D. Article 220
Article 210 governs branch circuits.
11. What is the minimum ampere rating for a general-purpose
receptacle circuit in a dwelling?
A. 10 amps
B. 15 amps
C. 20 amps
