New York Master Electrician Licensing Exam –
Practice Test Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
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1. What is the minimum size copper grounding electrode conductor required
for a 200-amp residential service?
A. 8 AWG
B. 4 AWG
C. 6 AWG
D. 2 AWG
According to NEC Table 250.66, a 200-amp service requires a minimum 4
AWG copper grounding electrode conductor.
2. The National Electrical Code (NEC) is primarily concerned with:
A. Energy efficiency
B. Safety of persons and property
C. Construction methods
D. Electrical utility design
The NEC focuses on safeguarding people and property from electrical
hazards.
3. What is the standard nominal voltage for residential single-phase service in
New York?
A. 120 volts
B. 120/240 volts
C. 208/120 volts
D. 240 volts
Residential services typically use single-phase 120/240V systems.
,4. The color white or gray is used to identify which type of conductor?
A. Grounding
B. Hot
C. Neutral
D. Equipment bonding
White or gray insulation indicates a grounded (neutral) conductor.
5. What is the maximum number of conductors permitted under one terminal
unless otherwise approved?
A. Two
B. One
C. Three
D. Four
Each terminal generally accommodates only one conductor to ensure a
secure connection.
6. The ampacity of conductors is primarily determined by:
A. Voltage rating
B. Conductor size and insulation temperature rating
C. Material type only
D. Circuit breaker size
Ampacity depends on wire size and insulation temperature rating per NEC
Table 310.15(B).
7. Nonmetallic-sheathed cable (Type NM) may be used:
A. Outdoors
B. In wet locations
C. In dry, protected indoor areas
D. Embedded in concrete
Type NM cable is approved for dry, indoor use only.
8. What is the minimum burial depth for direct-buried electrical cable under
residential driveways?
A. 12 inches
B. 18 inches
, C. 24 inches
D. 30 inches
NEC Table 300.5 specifies 24 inches for residential driveways.
9. What is the function of a circuit breaker?
A. Reduce voltage fluctuations
B. Protect circuit from overcurrent
C. Measure current
D. Control lighting
A circuit breaker interrupts current flow when an overcurrent occurs.
10. Ground-fault circuit interrupters (GFCIs) are required for outlets:
A. In living rooms
B. In bedrooms
C. In bathrooms
D. In hallways
NEC 210.8 requires GFCIs in bathrooms, kitchens, garages, and outdoor
receptacles.
11. What is the color code for the ungrounded conductor in a 120V circuit?
A. White
B. Green
C. Black
D. Gray
Black conductors are typically used for hot (ungrounded) wires in 120V
systems.
12. The main bonding jumper connects:
A. Two hots
B. The grounded conductor to the equipment grounding conductor
C. Two neutral bars
D. The service disconnect to the panel door
Practice Test Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the minimum size copper grounding electrode conductor required
for a 200-amp residential service?
A. 8 AWG
B. 4 AWG
C. 6 AWG
D. 2 AWG
According to NEC Table 250.66, a 200-amp service requires a minimum 4
AWG copper grounding electrode conductor.
2. The National Electrical Code (NEC) is primarily concerned with:
A. Energy efficiency
B. Safety of persons and property
C. Construction methods
D. Electrical utility design
The NEC focuses on safeguarding people and property from electrical
hazards.
3. What is the standard nominal voltage for residential single-phase service in
New York?
A. 120 volts
B. 120/240 volts
C. 208/120 volts
D. 240 volts
Residential services typically use single-phase 120/240V systems.
,4. The color white or gray is used to identify which type of conductor?
A. Grounding
B. Hot
C. Neutral
D. Equipment bonding
White or gray insulation indicates a grounded (neutral) conductor.
5. What is the maximum number of conductors permitted under one terminal
unless otherwise approved?
A. Two
B. One
C. Three
D. Four
Each terminal generally accommodates only one conductor to ensure a
secure connection.
6. The ampacity of conductors is primarily determined by:
A. Voltage rating
B. Conductor size and insulation temperature rating
C. Material type only
D. Circuit breaker size
Ampacity depends on wire size and insulation temperature rating per NEC
Table 310.15(B).
7. Nonmetallic-sheathed cable (Type NM) may be used:
A. Outdoors
B. In wet locations
C. In dry, protected indoor areas
D. Embedded in concrete
Type NM cable is approved for dry, indoor use only.
8. What is the minimum burial depth for direct-buried electrical cable under
residential driveways?
A. 12 inches
B. 18 inches
, C. 24 inches
D. 30 inches
NEC Table 300.5 specifies 24 inches for residential driveways.
9. What is the function of a circuit breaker?
A. Reduce voltage fluctuations
B. Protect circuit from overcurrent
C. Measure current
D. Control lighting
A circuit breaker interrupts current flow when an overcurrent occurs.
10. Ground-fault circuit interrupters (GFCIs) are required for outlets:
A. In living rooms
B. In bedrooms
C. In bathrooms
D. In hallways
NEC 210.8 requires GFCIs in bathrooms, kitchens, garages, and outdoor
receptacles.
11. What is the color code for the ungrounded conductor in a 120V circuit?
A. White
B. Green
C. Black
D. Gray
Black conductors are typically used for hot (ungrounded) wires in 120V
systems.
12. The main bonding jumper connects:
A. Two hots
B. The grounded conductor to the equipment grounding conductor
C. Two neutral bars
D. The service disconnect to the panel door
