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Second Year IEC Final Questions and
Correct Answers/ Latest Update / Already
Graded
Anex _____ in the NEC contains examples of load calculations for
dwellings.
Ans: D
Which of the installations listed below would be a wet location?
-a receptacle installed on the exterior wall of a building
- a run of PVC conduit installed on a fishing pier
-a luminaire installed on a parking lot pole
Ans: all of these
Which of the following is an example of a bare conductor?
- a 12 awg THHN copper wire
- the bare ground wire contained within romex (NM cable) sheathing
-the bare aluminum wire twisted with triplex
Ans: the bare aluminum wire twisted with triplex
All rights reserved © 2025/ 2026 |
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Which of the following statements is TRUE for an individual (or
dedicated) branch circuit that is run in a conduit with other circuits?
Ans: it can share a neutral with another circuit
Equipment designed to open circuits under ____ shall have an
interrupting rating not less than the nominal circuit voltage and the
current that is available at the line side of the equipment.
- short circuit
-overload
-ground fault
Ans: all of these
The NEC permits the insulation for an ungrounded conductor to be
_____ in color.
- orange
-black
-brown
-yellow
Ans: any of these
All rights reserved © 2025/ 2026 |
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Which of the following locations requires that a three-way switch be
installed at the lower landing and another three-way switch be
installed at the upper landing to control the stair way lighting between
the 1st and 2nd floors?
Ans: a townhome
A 175- amp breaker protects a feeder that originates in a 277/480-volt,
3-ph, 4 wire service panel in an office building. Which of the following
conductors is the smallest size permitted for the feeder ?
Ans: 2/0
A 200-amp breaker protects a feeder that originates in a 120/240 volt, 3
ph, 4 wire service panel in a movie theatre. Which of the following
THHN/THWN conductors is the smallest size permitted for the feeder ?
Ans: 3/0
The maximum number of 3-pole circuit breakers used as service
disconnects permitted in a 3 phase panelboard is ______.
Ans: 6
Which of the following are characteristics of THHN/THWN insulation?
- heat-resistant
All rights reserved © 2025/ 2026 |
Second Year IEC Final Questions and
Correct Answers/ Latest Update / Already
Graded
Anex _____ in the NEC contains examples of load calculations for
dwellings.
Ans: D
Which of the installations listed below would be a wet location?
-a receptacle installed on the exterior wall of a building
- a run of PVC conduit installed on a fishing pier
-a luminaire installed on a parking lot pole
Ans: all of these
Which of the following is an example of a bare conductor?
- a 12 awg THHN copper wire
- the bare ground wire contained within romex (NM cable) sheathing
-the bare aluminum wire twisted with triplex
Ans: the bare aluminum wire twisted with triplex
All rights reserved © 2025/ 2026 |
, Page |2
Which of the following statements is TRUE for an individual (or
dedicated) branch circuit that is run in a conduit with other circuits?
Ans: it can share a neutral with another circuit
Equipment designed to open circuits under ____ shall have an
interrupting rating not less than the nominal circuit voltage and the
current that is available at the line side of the equipment.
- short circuit
-overload
-ground fault
Ans: all of these
The NEC permits the insulation for an ungrounded conductor to be
_____ in color.
- orange
-black
-brown
-yellow
Ans: any of these
All rights reserved © 2025/ 2026 |
, Page |3
Which of the following locations requires that a three-way switch be
installed at the lower landing and another three-way switch be
installed at the upper landing to control the stair way lighting between
the 1st and 2nd floors?
Ans: a townhome
A 175- amp breaker protects a feeder that originates in a 277/480-volt,
3-ph, 4 wire service panel in an office building. Which of the following
conductors is the smallest size permitted for the feeder ?
Ans: 2/0
A 200-amp breaker protects a feeder that originates in a 120/240 volt, 3
ph, 4 wire service panel in a movie theatre. Which of the following
THHN/THWN conductors is the smallest size permitted for the feeder ?
Ans: 3/0
The maximum number of 3-pole circuit breakers used as service
disconnects permitted in a 3 phase panelboard is ______.
Ans: 6
Which of the following are characteristics of THHN/THWN insulation?
- heat-resistant
All rights reserved © 2025/ 2026 |
