NYC DCAS Electrician Exam Questions With Correct
Answers (Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
This premium, high-density study guide features 200 verified multiple-
choice questions with detailed structural rationales explicitly tailored for
the 2026 NYC DCAS Electrician civil service exam. The comprehensive
layout spans essential testing domains including NYC Electrical Code
standards, complex theoretical calculations, motor controls, and advanced
diagnostic safety protocols. Master your upcoming journeyman, master
electrician, or municipal agency license examination on the very first try
with this instantly accessible exam prep document.
Question 1
What is the minimum clear working space depth required in front of electrical
equipment operating at 120 volts to ground with exposed live parts on one side
and grounded parts on the other side (Condition 2), according to the NYC
Electrical Code?
A) 3 feet
B) 3-1/2 feet
C) 4 feet
D) 5 feet
VERIFIED ANSWER: A) 3 feet
EXPLANATION: Per NEC/NYC Electrical Code Table 110.26(A)(1), for voltages
,to ground of 0–150V, the minimum clear working depth required for
Condition 2 (exposed live parts on one side and grounded parts/concrete
walls on the other) is exactly 3 feet. This ensures safe physical clearance
for an electrician troubleshooting active equipment.
Question 2
A 240-volt, single-phase continuous commercial load draws 40 Amperes. What is
the minimum overcurrent protection device (OCPD) size required for this circuit?
A) 40 Amperes
B) 45 Amperes
C) 50 Amperes
D) 60 Amperes
VERIFIED ANSWER: C) 50 Amperes
EXPLANATION: Continuous loads must be calculated at 125% of the
continuous current draw before selecting the protective device (40A × 1.25
= 50A). Therefore, a 50-Ampere breaker or fuse is the minimum required
rating to prevent nuisance tripping under sustained thermal load.
Question 3
Which type of conduit is specifically prohibited from being used for structural
support of fixtures or other equipment within New York City electrical
installations?
A) Rigid Metal Conduit (RMC)
B) Intermediate Metal Conduit (IMC)
,C) Electrical Metallic Tubing (EMT)
D) Rigid Polyvinyl Chloride Conduit (PVC)
VERIFIED ANSWER: C) Electrical Metallic Tubing (EMT)
EXPLANATION: Under the NYC Electrical Code amendments, EMT is a thin-
wall tubing secured by compression or set-screw couplings. It lacks the
structural rigidity and threaded connections of heavy-wall pipes (like RMC
or IMC) necessary to safely support fixtures or boxes under physical load.
Question 4
What is the total resistance of a parallel circuit containing three resistors with
individual values of 20 ohms, 30 ohms, and 60 ohms?
A) 10 ohms
B) 15 ohms
C) 36 ohms
D) 110 ohms
VERIFIED ANSWER: A) 10 ohms
EXPLANATION: The total resistance (\(R_{t}\)) of a parallel circuit is
calculated using the reciprocal formula: \(1/R_t = 1/R_1 + 1/R_2 + 1/R_3\).
Substituting values gives \(1/R_t = 1/20 + 1/30 + 1/60 = 3/60 + 2/60 +
1/60 = 6/60\). Inverting \(6/60\) results in \(60/6\), which equals 10
ohms.
Question 5
When installing a grounding electrode conductor (GEC) to a water pipe system in a
New York City building, the connection must be made within what maximum
, distance from the structural point of entrance of the water piping?
A) 2 feet
B) 5 feet
C) 10 feet
D) 15 feet
VERIFIED ANSWER: B) 5 feet
EXPLANATION: To guarantee structural integrity and minimize the risk of
downstream plumbing modifications or non-metallic repairs interrupting
the grounding path, the connection to the interior metal water piping must
be made within 5 feet of where the pipe enters the building.
Question 6
What is the standard multiplier used to determine the total branch circuit load
calculation for a commercial showroom track lighting system based on footage?
A) 45 Volt-Amperes per foot
B) 90 Volt-Amperes per foot
C) 150 Volt-Amperes per foot
D) 180 Volt-Amperes per every 2 feet
VERIFIED ANSWER: D) 180 Volt-Amperes per every 2 feet
EXPLANATION: According to the NYC/NEC calculations for commercial
branch circuits, track lighting loads must be calculated at a minimum of 180
Volt-Amperes for every 2 feet (or fraction thereof) of track lighting
installed, ensuring adequate feeder sizing.
Question 7
Answers (Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
This premium, high-density study guide features 200 verified multiple-
choice questions with detailed structural rationales explicitly tailored for
the 2026 NYC DCAS Electrician civil service exam. The comprehensive
layout spans essential testing domains including NYC Electrical Code
standards, complex theoretical calculations, motor controls, and advanced
diagnostic safety protocols. Master your upcoming journeyman, master
electrician, or municipal agency license examination on the very first try
with this instantly accessible exam prep document.
Question 1
What is the minimum clear working space depth required in front of electrical
equipment operating at 120 volts to ground with exposed live parts on one side
and grounded parts on the other side (Condition 2), according to the NYC
Electrical Code?
A) 3 feet
B) 3-1/2 feet
C) 4 feet
D) 5 feet
VERIFIED ANSWER: A) 3 feet
EXPLANATION: Per NEC/NYC Electrical Code Table 110.26(A)(1), for voltages
,to ground of 0–150V, the minimum clear working depth required for
Condition 2 (exposed live parts on one side and grounded parts/concrete
walls on the other) is exactly 3 feet. This ensures safe physical clearance
for an electrician troubleshooting active equipment.
Question 2
A 240-volt, single-phase continuous commercial load draws 40 Amperes. What is
the minimum overcurrent protection device (OCPD) size required for this circuit?
A) 40 Amperes
B) 45 Amperes
C) 50 Amperes
D) 60 Amperes
VERIFIED ANSWER: C) 50 Amperes
EXPLANATION: Continuous loads must be calculated at 125% of the
continuous current draw before selecting the protective device (40A × 1.25
= 50A). Therefore, a 50-Ampere breaker or fuse is the minimum required
rating to prevent nuisance tripping under sustained thermal load.
Question 3
Which type of conduit is specifically prohibited from being used for structural
support of fixtures or other equipment within New York City electrical
installations?
A) Rigid Metal Conduit (RMC)
B) Intermediate Metal Conduit (IMC)
,C) Electrical Metallic Tubing (EMT)
D) Rigid Polyvinyl Chloride Conduit (PVC)
VERIFIED ANSWER: C) Electrical Metallic Tubing (EMT)
EXPLANATION: Under the NYC Electrical Code amendments, EMT is a thin-
wall tubing secured by compression or set-screw couplings. It lacks the
structural rigidity and threaded connections of heavy-wall pipes (like RMC
or IMC) necessary to safely support fixtures or boxes under physical load.
Question 4
What is the total resistance of a parallel circuit containing three resistors with
individual values of 20 ohms, 30 ohms, and 60 ohms?
A) 10 ohms
B) 15 ohms
C) 36 ohms
D) 110 ohms
VERIFIED ANSWER: A) 10 ohms
EXPLANATION: The total resistance (\(R_{t}\)) of a parallel circuit is
calculated using the reciprocal formula: \(1/R_t = 1/R_1 + 1/R_2 + 1/R_3\).
Substituting values gives \(1/R_t = 1/20 + 1/30 + 1/60 = 3/60 + 2/60 +
1/60 = 6/60\). Inverting \(6/60\) results in \(60/6\), which equals 10
ohms.
Question 5
When installing a grounding electrode conductor (GEC) to a water pipe system in a
New York City building, the connection must be made within what maximum
, distance from the structural point of entrance of the water piping?
A) 2 feet
B) 5 feet
C) 10 feet
D) 15 feet
VERIFIED ANSWER: B) 5 feet
EXPLANATION: To guarantee structural integrity and minimize the risk of
downstream plumbing modifications or non-metallic repairs interrupting
the grounding path, the connection to the interior metal water piping must
be made within 5 feet of where the pipe enters the building.
Question 6
What is the standard multiplier used to determine the total branch circuit load
calculation for a commercial showroom track lighting system based on footage?
A) 45 Volt-Amperes per foot
B) 90 Volt-Amperes per foot
C) 150 Volt-Amperes per foot
D) 180 Volt-Amperes per every 2 feet
VERIFIED ANSWER: D) 180 Volt-Amperes per every 2 feet
EXPLANATION: According to the NYC/NEC calculations for commercial
branch circuits, track lighting loads must be calculated at a minimum of 180
Volt-Amperes for every 2 feet (or fraction thereof) of track lighting
installed, ensuring adequate feeder sizing.
Question 7
