SECOND YEAR IEC FINAL EXAM LATEST VERSION
05/09/2026
2026/2027| QUESTIONS AND CORRECT ANSWERS
Second Year IEC Final Exam Latest Version 2026/2027| Questions and
Correct Answers, Exams of Advanced Education
Anex _____ in the NEC contains examples of load calculations for dwellings.
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
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
the bare aluminum wire twisted with triplex
Which of the following statements is TRUE for an individual (or dedicated) branch circuit that is run in a
conduit with other circuits?
it can share a neutral with another circuit
5/9/2026
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.
1
, SECOND YEAR IEC FINAL EXAM LATEST VERSION
05/09/2026
2026/2027| QUESTIONS AND CORRECT ANSWERS
- short circuit
-overload
-ground fault
all of these
The NEC permits the insulation for an ungrounded conductor to be _____ in color.
- orange
-black
-brown
-yellow
any of these
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?
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 ?
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 ?
5/9/2026
3/0
2
, SECOND YEAR IEC FINAL EXAM LATEST VERSION
05/09/2026
2026/2027| QUESTIONS AND CORRECT ANSWERS
The maximum number of 3-pole circuit breakers used as service disconnects permitted in a 3 phase
panelboard is ______.
6
Which of the following are characteristics of THHN/THWN insulation?
- heat-resistant
- a nylon outer covering or some equivalent
- flame retardant
-moisture-resistant
all of these
For the purpose of determining the number of current-carrying conductors in a cable or conduit, the
neutral _____ counted when the branch circuit is 120/240-volt, 1 phase, 3 wire connected to a 120/240-
volt, 3 phase delta, 4 wire panelboard. Each of the two circuits carries 16 amps and serves resistive
(linear) loads.
is not
Where a 120/240 volt, 1 phase, 3 wire multiwire branch circuit is connected to a "split-wired" duplex
receptacle in a barber shop, the branch-circuit OCPD/disconnect is permitted to be ______
i. two single-pole circuit breakers without handle ties
ii. two single-pole circuit breakers with identified handle ties
iii. a 2-pole circuit breaker
ii or iii only
5/9/2026
3
05/09/2026
2026/2027| QUESTIONS AND CORRECT ANSWERS
Second Year IEC Final Exam Latest Version 2026/2027| Questions and
Correct Answers, Exams of Advanced Education
Anex _____ in the NEC contains examples of load calculations for dwellings.
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
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
the bare aluminum wire twisted with triplex
Which of the following statements is TRUE for an individual (or dedicated) branch circuit that is run in a
conduit with other circuits?
it can share a neutral with another circuit
5/9/2026
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.
1
, SECOND YEAR IEC FINAL EXAM LATEST VERSION
05/09/2026
2026/2027| QUESTIONS AND CORRECT ANSWERS
- short circuit
-overload
-ground fault
all of these
The NEC permits the insulation for an ungrounded conductor to be _____ in color.
- orange
-black
-brown
-yellow
any of these
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?
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 ?
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 ?
5/9/2026
3/0
2
, SECOND YEAR IEC FINAL EXAM LATEST VERSION
05/09/2026
2026/2027| QUESTIONS AND CORRECT ANSWERS
The maximum number of 3-pole circuit breakers used as service disconnects permitted in a 3 phase
panelboard is ______.
6
Which of the following are characteristics of THHN/THWN insulation?
- heat-resistant
- a nylon outer covering or some equivalent
- flame retardant
-moisture-resistant
all of these
For the purpose of determining the number of current-carrying conductors in a cable or conduit, the
neutral _____ counted when the branch circuit is 120/240-volt, 1 phase, 3 wire connected to a 120/240-
volt, 3 phase delta, 4 wire panelboard. Each of the two circuits carries 16 amps and serves resistive
(linear) loads.
is not
Where a 120/240 volt, 1 phase, 3 wire multiwire branch circuit is connected to a "split-wired" duplex
receptacle in a barber shop, the branch-circuit OCPD/disconnect is permitted to be ______
i. two single-pole circuit breakers without handle ties
ii. two single-pole circuit breakers with identified handle ties
iii. a 2-pole circuit breaker
ii or iii only
5/9/2026
3
