NYC Electrician Exam 2026 | Latest Update | Questions &
Answers | Exam Prep PDF | Graded A+
1. If an electrician mistakenly installs an overcurrent device in series with the
shunt winding of an autotransformer, what might be the consequences during
a fault condition?
The transformer may fail to protect itself, leading to overheating and
possible damage.
The shunt winding will automatically disconnect from the circuit.
The autotransformer will operate normally without any issues.
The overcurrent device will trip immediately, preventing any damage.
2. If the allowable current in a copper bus bar is 1000 amperes per square inch
of cross-section, what would be the width of a standard ¼ bus bar designed
to carry 1,500 A?
8 inches
2 inches
4 inches
6 inches
3. What is the minimum wire bending space allowed in a panelboard being fed
with paralleled pairs of 2/0 conductors entering the enclosure through the
wall opposite the terminals?
9 in
8 in
7 in
6 in
,4. Describe the relationship between resistance and conductance in electrical
circuits.
Conductance is the reciprocal of resistance, meaning that as
resistance increases, conductance decreases, and vice versa.
Resistance and conductance are the same concept, measuring the
same property of a material.
Conductance increases with higher resistance, indicating better
conductivity.
Conductance is unrelated to resistance and measures the voltage in a
circuit.
5. Describe the significance of the 50% momentary Ampacity requirement for
branch-circuit conductors in health care facilities.
The 50% momentary Ampacity requirement allows for lower safety
standards in health care facilities.
The 50% momentary Ampacity requirement is irrelevant to health care
facilities.
The 50% momentary Ampacity requirement is only applicable to
residential installations.
The 50% momentary Ampacity requirement ensures that the
conductors can handle short-term surges in current without tripping
the overcurrent protection.
6. What is the minimum percentage of momentary Ampacity required for
branch-circuit conductors in health care facilities?
25%
75%
100%
, 50%
7. Which of the following is the minimum voltage at which live electrical
equipment should be guarded?
100 volts
50 volts
80 volts
8. The highest position of an operating handle of a circuit breaker is limited to
____________.
6 foot 8 inches
6 1/2 foot
6 foot 7 inches
6 foot
9. Because a water heater represents a continuous load, the branch circuit must
be rated not less than ____ percent of the water heater nameplate rating.
125
50
75
100
10. If an electrician is sizing a circuit breaker for a small motor compressor with a
rated load current of 10 amps, what should be the minimum rating of the
circuit breaker based on the assumed locked rotor current?
40 amps
, 60 amps
80 amps
20 amps
11. Describe the significance of the 40% fill limit for THW conductors in a conduit
according to electrical codes.
The 40% fill limit is only applicable to residential wiring.
The 40% fill limit allows for maximum conductor capacity without
regard to safety.
The 40% fill limit ensures proper heat dissipation and prevents
overheating of conductors.
The 40% fill limit is arbitrary and has no real impact on safety.
12. Describe the rationale behind sizing a branch circuit at 125% of the
nameplate rating for a domestic hot water heater.
Sizing at 125% is only necessary for larger heaters.
Sizing at 125% accounts for potential inrush current and ensures
safe operation.
Sizing at 125% is arbitrary and does not consider safety.
Sizing at 125% is a requirement specific to commercial installations.
13. If an electrician is testing a conductor rated for 240V AC, what voltage
should the megger be set to for optimal insulation testing?
240V
192V
Approximately 340V
Answers | Exam Prep PDF | Graded A+
1. If an electrician mistakenly installs an overcurrent device in series with the
shunt winding of an autotransformer, what might be the consequences during
a fault condition?
The transformer may fail to protect itself, leading to overheating and
possible damage.
The shunt winding will automatically disconnect from the circuit.
The autotransformer will operate normally without any issues.
The overcurrent device will trip immediately, preventing any damage.
2. If the allowable current in a copper bus bar is 1000 amperes per square inch
of cross-section, what would be the width of a standard ¼ bus bar designed
to carry 1,500 A?
8 inches
2 inches
4 inches
6 inches
3. What is the minimum wire bending space allowed in a panelboard being fed
with paralleled pairs of 2/0 conductors entering the enclosure through the
wall opposite the terminals?
9 in
8 in
7 in
6 in
,4. Describe the relationship between resistance and conductance in electrical
circuits.
Conductance is the reciprocal of resistance, meaning that as
resistance increases, conductance decreases, and vice versa.
Resistance and conductance are the same concept, measuring the
same property of a material.
Conductance increases with higher resistance, indicating better
conductivity.
Conductance is unrelated to resistance and measures the voltage in a
circuit.
5. Describe the significance of the 50% momentary Ampacity requirement for
branch-circuit conductors in health care facilities.
The 50% momentary Ampacity requirement allows for lower safety
standards in health care facilities.
The 50% momentary Ampacity requirement is irrelevant to health care
facilities.
The 50% momentary Ampacity requirement is only applicable to
residential installations.
The 50% momentary Ampacity requirement ensures that the
conductors can handle short-term surges in current without tripping
the overcurrent protection.
6. What is the minimum percentage of momentary Ampacity required for
branch-circuit conductors in health care facilities?
25%
75%
100%
, 50%
7. Which of the following is the minimum voltage at which live electrical
equipment should be guarded?
100 volts
50 volts
80 volts
8. The highest position of an operating handle of a circuit breaker is limited to
____________.
6 foot 8 inches
6 1/2 foot
6 foot 7 inches
6 foot
9. Because a water heater represents a continuous load, the branch circuit must
be rated not less than ____ percent of the water heater nameplate rating.
125
50
75
100
10. If an electrician is sizing a circuit breaker for a small motor compressor with a
rated load current of 10 amps, what should be the minimum rating of the
circuit breaker based on the assumed locked rotor current?
40 amps
, 60 amps
80 amps
20 amps
11. Describe the significance of the 40% fill limit for THW conductors in a conduit
according to electrical codes.
The 40% fill limit is only applicable to residential wiring.
The 40% fill limit allows for maximum conductor capacity without
regard to safety.
The 40% fill limit ensures proper heat dissipation and prevents
overheating of conductors.
The 40% fill limit is arbitrary and has no real impact on safety.
12. Describe the rationale behind sizing a branch circuit at 125% of the
nameplate rating for a domestic hot water heater.
Sizing at 125% is only necessary for larger heaters.
Sizing at 125% accounts for potential inrush current and ensures
safe operation.
Sizing at 125% is arbitrary and does not consider safety.
Sizing at 125% is a requirement specific to commercial installations.
13. If an electrician is testing a conductor rated for 240V AC, what voltage
should the megger be set to for optimal insulation testing?
240V
192V
Approximately 340V
