NYC MASTER ELECTRICIAN LICENSE EXAM
QUESTIONS WITH CORRRECT 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 increase electrical installation costs
B. To protect people and property from electrical hazards
C. To standardize electrical tools
D. To regulate utility companies
Correct Answer: B
Rationale: The NEC is a safety standard intended to reduce fire,
shock, and electrical hazards—not to control utilities or pricing.
2. Which unit is used to measure electrical resistance?
A. Volt
B. Ampere
C. Watt
D. Ohm
Correct Answer: D
Rationale: Resistance is measured in ohms (Ω), as defined by
Ohm’s Law.
,3. Ohm’s Law states that voltage equals:
A. Current × Resistance
B. Power ÷ Current
C. Resistance ÷ Current
D. Power × Resistance
Correct Answer: A
Rationale: Ohm’s Law formula is V = I × R.
4. What color insulation is required for an equipment
grounding conductor?
A. White
B. Black
C. Green or bare
D. Red
Correct Answer: C
Rationale: NEC requires grounding conductors to be green,
green/yellow, or bare.
5. Which device protects against ground faults?
A. Circuit breaker
B. Fuse
C. GFCI
D. AFCI
,Correct Answer: C
Rationale: Ground-Fault Circuit Interrupters protect people
from shock caused by ground faults.
6. What is the minimum working clearance in front of
electrical panels (up to 600V)?
A. 24 inches
B. 30 inches
C. 36 inches
D. 42 inches
Correct Answer: C
Rationale: NEC requires 36 inches of clear working space in
front of electrical equipment.
7. What type of current is supplied to most residential
buildings in NYC?
A. DC
B. Single-phase AC
C. Three-phase AC
D. Pulsed DC
Correct Answer: B
Rationale: Residential buildings typically receive single-phase
alternating current.
, 8. Which conductor is intentionally grounded?
A. Equipment grounding conductor
B. Ungrounded (hot) conductor
C. Neutral conductor
D. Bonding jumper
Correct Answer: C
Rationale: The neutral conductor is grounded at the service
entrance.
9. What does an AFCI primarily protect against?
A. Ground faults
B. Overloads
C. Short circuits
D. Arc faults
Correct Answer: D
Rationale: Arc-Fault Circuit Interrupters prevent fires caused by
arcing conditions.
10. What is the maximum allowable voltage drop for branch
circuits (recommended)?
A. 2%
B. 3%
C. 5%
D. 10%
QUESTIONS WITH CORRRECT 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 increase electrical installation costs
B. To protect people and property from electrical hazards
C. To standardize electrical tools
D. To regulate utility companies
Correct Answer: B
Rationale: The NEC is a safety standard intended to reduce fire,
shock, and electrical hazards—not to control utilities or pricing.
2. Which unit is used to measure electrical resistance?
A. Volt
B. Ampere
C. Watt
D. Ohm
Correct Answer: D
Rationale: Resistance is measured in ohms (Ω), as defined by
Ohm’s Law.
,3. Ohm’s Law states that voltage equals:
A. Current × Resistance
B. Power ÷ Current
C. Resistance ÷ Current
D. Power × Resistance
Correct Answer: A
Rationale: Ohm’s Law formula is V = I × R.
4. What color insulation is required for an equipment
grounding conductor?
A. White
B. Black
C. Green or bare
D. Red
Correct Answer: C
Rationale: NEC requires grounding conductors to be green,
green/yellow, or bare.
5. Which device protects against ground faults?
A. Circuit breaker
B. Fuse
C. GFCI
D. AFCI
,Correct Answer: C
Rationale: Ground-Fault Circuit Interrupters protect people
from shock caused by ground faults.
6. What is the minimum working clearance in front of
electrical panels (up to 600V)?
A. 24 inches
B. 30 inches
C. 36 inches
D. 42 inches
Correct Answer: C
Rationale: NEC requires 36 inches of clear working space in
front of electrical equipment.
7. What type of current is supplied to most residential
buildings in NYC?
A. DC
B. Single-phase AC
C. Three-phase AC
D. Pulsed DC
Correct Answer: B
Rationale: Residential buildings typically receive single-phase
alternating current.
, 8. Which conductor is intentionally grounded?
A. Equipment grounding conductor
B. Ungrounded (hot) conductor
C. Neutral conductor
D. Bonding jumper
Correct Answer: C
Rationale: The neutral conductor is grounded at the service
entrance.
9. What does an AFCI primarily protect against?
A. Ground faults
B. Overloads
C. Short circuits
D. Arc faults
Correct Answer: D
Rationale: Arc-Fault Circuit Interrupters prevent fires caused by
arcing conditions.
10. What is the maximum allowable voltage drop for branch
circuits (recommended)?
A. 2%
B. 3%
C. 5%
D. 10%
