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NYC Electrician (CUNY) Exam COMPLETE
QUESTIONS AND DETAILED SOLUTIONS LATEST
UPDATE THIS YEAR-JUST RELEASED
NYC Electrician (CUNY) Exam, based on the 2023 NEC and NYC Electrical Code amendments.
1. A 600A, 480V, 3-phase feeder supplies a continuous industrial load. Ambient temperature is 50°C
(122°F). Terminations rated 75°C. 75°C rated THWN-2 copper. Minimum ampacity before temperature
correction?
A) 600A
B) 660A
C) 750A
D) 800A
Answer: C
Rationale: Continuous load × 1.25 = 600A × 1.25 = 750A (NEC 210.19(A)(1)). Temperature correction
applied after.
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2. In NYC, a building’s standby generator must be tested under load for at least how long monthly?
A) 15 min
B) 30 min
C) 60 min
D) 90 min
Answer: B
Rationale: NYC Fire Code §605.3 requires 30 minutes monthly under ≥30% load.
3. A 100 hp, 460V, 3-phase induction motor has a nameplate FLA of 124A. What is the minimum
conductor ampacity?
A) 124A
B) 155A
C) 186A
D) 200A
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Answer: B
Rationale: NEC 430.22: 125% of FLA = 124A × 1.25 = 155A.
4. What is the maximum voltage drop recommended by the NEC for a branch circuit feeder combined?
A) 1%
B) 2%
C) 3%
D) 5%
Answer: D
Rationale: NEC 210.19(A)(1) Informational Note No. 4 recommends 3% for branch circuit, 5% total for
feeder + branch circuit.
5. A 2000A service has 12 sets of 500 kcmil copper per phase. What is the minimum size equipment
grounding conductor (EGC) per set?
A) #4 Cu
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B) #2 Cu
C) 1/0 Cu
D) 3/0 Cu
Answer: B
Rationale: NEC 250.122: 2000A requires 3/0 Cu EGC total. Divided by 12 sets = #2 Cu per set (NEC
250.122(F)).
6. The name given to a system or circuit conductor that is intentionally grounded is:
A) Grounding Conductor
B) Bonding Conductor
C) High-leg conductor
D) Grounded or neutral conductor
Answer: D
Rationale: Article 100 Definitions – “Grounded (neutral) conductor.”
NYC Electrician (CUNY) Exam COMPLETE
QUESTIONS AND DETAILED SOLUTIONS LATEST
UPDATE THIS YEAR-JUST RELEASED
NYC Electrician (CUNY) Exam, based on the 2023 NEC and NYC Electrical Code amendments.
1. A 600A, 480V, 3-phase feeder supplies a continuous industrial load. Ambient temperature is 50°C
(122°F). Terminations rated 75°C. 75°C rated THWN-2 copper. Minimum ampacity before temperature
correction?
A) 600A
B) 660A
C) 750A
D) 800A
Answer: C
Rationale: Continuous load × 1.25 = 600A × 1.25 = 750A (NEC 210.19(A)(1)). Temperature correction
applied after.
, Page 2 of 153
2. In NYC, a building’s standby generator must be tested under load for at least how long monthly?
A) 15 min
B) 30 min
C) 60 min
D) 90 min
Answer: B
Rationale: NYC Fire Code §605.3 requires 30 minutes monthly under ≥30% load.
3. A 100 hp, 460V, 3-phase induction motor has a nameplate FLA of 124A. What is the minimum
conductor ampacity?
A) 124A
B) 155A
C) 186A
D) 200A
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Answer: B
Rationale: NEC 430.22: 125% of FLA = 124A × 1.25 = 155A.
4. What is the maximum voltage drop recommended by the NEC for a branch circuit feeder combined?
A) 1%
B) 2%
C) 3%
D) 5%
Answer: D
Rationale: NEC 210.19(A)(1) Informational Note No. 4 recommends 3% for branch circuit, 5% total for
feeder + branch circuit.
5. A 2000A service has 12 sets of 500 kcmil copper per phase. What is the minimum size equipment
grounding conductor (EGC) per set?
A) #4 Cu
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B) #2 Cu
C) 1/0 Cu
D) 3/0 Cu
Answer: B
Rationale: NEC 250.122: 2000A requires 3/0 Cu EGC total. Divided by 12 sets = #2 Cu per set (NEC
250.122(F)).
6. The name given to a system or circuit conductor that is intentionally grounded is:
A) Grounding Conductor
B) Bonding Conductor
C) High-leg conductor
D) Grounded or neutral conductor
Answer: D
Rationale: Article 100 Definitions – “Grounded (neutral) conductor.”
