Pittsburgh Department of Permits, Licenses &
Inspections – Electrical Trade License Examination
(ICC National Standard Electrician Exam – T16 /
G16 / F16 versions) Questions and Correct Answers
(Verified Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1.
What is the primary purpose of the National Electrical Code (NEC)?
A. To establish electrical utility rates
B. To provide rules for the design and installation of electrical systems
C. To regulate electrical manufacturers
D. To establish wages for electricians
Answer: B. To provide rules for the design and installation of electrical
systems
Rationale: The NEC establishes requirements intended to safeguard
people and property from hazards arising from the use of electricity. It
addresses electrical installations, equipment, wiring methods,
overcurrent protection, grounding, and related subjects.
,2.
Which of the following is generally considered a grounded conductor?
A. Equipment grounding conductor
B. Bonding jumper
C. Neutral conductor connected to the system grounded point
D. Grounding electrode conductor
Answer: C. Neutral conductor connected to the system grounded
point
Rationale: A grounded conductor is intentionally connected to ground,
typically at the service or source of a separately derived system. In a
typical single-phase system, the neutral is the grounded conductor. An
equipment grounding conductor, by contrast, is normally an
ungrounded conductor used to connect non-current-carrying metal
parts to the grounding system.
3.
What is the maximum continuous load that should generally be placed
on a circuit rated for 20 amperes?
,A. 10 amperes
B. 15 amperes
C. 16 amperes
D. 20 amperes
Answer: C. 16 amperes
Rationale: Where the continuous load is the determining load, a
branch circuit is generally sized so that the continuous load does not
exceed 80 percent of the circuit rating. Eighty percent of 20 amperes is
16 amperes.
4.
Which conductor is normally identified by white or gray insulation in a
typical branch circuit?
A. Ungrounded conductor
B. Grounded conductor
C. Equipment grounding conductor
D. Switch leg only
Answer: B. Grounded conductor
Rationale: The grounded conductor is generally identified by a
continuous white or gray covering or other permitted identification.
, Green or green with yellow stripes is reserved for equipment
grounding conductors and similar grounding purposes.
5.
What is the purpose of an equipment grounding conductor?
A. To carry normal circuit current
B. To increase circuit voltage
C. To provide a low-impedance path for fault current
D. To replace overcurrent protection
Answer: C. To provide a low-impedance path for fault current
Rationale: The equipment grounding conductor connects exposed
conductive parts to the grounding system and provides a path that
facilitates operation of the overcurrent protective device during a
fault. It is not intended to carry normal load current.
6.
A 120/240-volt single-phase, three-wire system has two ungrounded
conductors and one grounded conductor. What voltage exists between
the two ungrounded conductors?
Inspections – Electrical Trade License Examination
(ICC National Standard Electrician Exam – T16 /
G16 / F16 versions) Questions and Correct Answers
(Verified Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1.
What is the primary purpose of the National Electrical Code (NEC)?
A. To establish electrical utility rates
B. To provide rules for the design and installation of electrical systems
C. To regulate electrical manufacturers
D. To establish wages for electricians
Answer: B. To provide rules for the design and installation of electrical
systems
Rationale: The NEC establishes requirements intended to safeguard
people and property from hazards arising from the use of electricity. It
addresses electrical installations, equipment, wiring methods,
overcurrent protection, grounding, and related subjects.
,2.
Which of the following is generally considered a grounded conductor?
A. Equipment grounding conductor
B. Bonding jumper
C. Neutral conductor connected to the system grounded point
D. Grounding electrode conductor
Answer: C. Neutral conductor connected to the system grounded
point
Rationale: A grounded conductor is intentionally connected to ground,
typically at the service or source of a separately derived system. In a
typical single-phase system, the neutral is the grounded conductor. An
equipment grounding conductor, by contrast, is normally an
ungrounded conductor used to connect non-current-carrying metal
parts to the grounding system.
3.
What is the maximum continuous load that should generally be placed
on a circuit rated for 20 amperes?
,A. 10 amperes
B. 15 amperes
C. 16 amperes
D. 20 amperes
Answer: C. 16 amperes
Rationale: Where the continuous load is the determining load, a
branch circuit is generally sized so that the continuous load does not
exceed 80 percent of the circuit rating. Eighty percent of 20 amperes is
16 amperes.
4.
Which conductor is normally identified by white or gray insulation in a
typical branch circuit?
A. Ungrounded conductor
B. Grounded conductor
C. Equipment grounding conductor
D. Switch leg only
Answer: B. Grounded conductor
Rationale: The grounded conductor is generally identified by a
continuous white or gray covering or other permitted identification.
, Green or green with yellow stripes is reserved for equipment
grounding conductors and similar grounding purposes.
5.
What is the purpose of an equipment grounding conductor?
A. To carry normal circuit current
B. To increase circuit voltage
C. To provide a low-impedance path for fault current
D. To replace overcurrent protection
Answer: C. To provide a low-impedance path for fault current
Rationale: The equipment grounding conductor connects exposed
conductive parts to the grounding system and provides a path that
facilitates operation of the overcurrent protective device during a
fault. It is not intended to carry normal load current.
6.
A 120/240-volt single-phase, three-wire system has two ungrounded
conductors and one grounded conductor. What voltage exists between
the two ungrounded conductors?
