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IEC FINAL EXAM QUESTIONS AND ANSWERS
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IEC FINAL EXAM QUESTIONS AND ANSWERS /IEC FINAL EXAM QUESTIONS AND ANSWERS /IEC FINAL EXAM QUESTIONS AND ANSWERS
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IEC FINAL EXAM QUESTIONS AND ANSWERS 2024-2025
IEC FINAL EXAM QUESTIONS AND ANSWERS 2024-
2025
Which of these is the symbol used for a 4-way switch? - correct answer--$4
Lighted handle toggle switches utilize a neon lamp that is illuminated when the switch is in the ___
position. - correct answer--OFF
The ungrounded conductor is often called the ___. - correct answer--hot
To convert a conventional duplex receptacle into a split-wired receptacle, the ___ is removed. - correct
answer--tab
Drawing ___ in Figure 112.415 is a framed locking (not key-lock) type switch. - correct answer--IV
Refer to Figure 112.31. The light is ___. - correct answer--switched
Refer to Figure 128.110. Which of the drawings shows the (3-lamp) 2 x 4 luminaire correctly connected?
The "outboard" or 2-lamp ballast is to be controlled from switch #1 and the "inboard" or 1-lamp ballast
is to be controlled from switch #2. - correct answer--neither I nor II
The attachment cord cap (plug) shown in Figure 112.233 is connected to a table lamp. Tab 2 is
connected to the ___ conductor of the branch circuit when the cord cap is plugged into a wall
receptacle. - correct answer--grounded
, IEC FINAL EXAM QUESTIONS AND ANSWERS 2024-
2025
What type of switch would you use to control a lighting load from one location only? - correct answer--
Single pole
SPST is an abbreviation for ___. - correct answer--Single Pole-Single Throw
The neutral conductor of a 120-volt circuit is referred to as the ___ conductor in the NEC®. - correct
answer--grounded
The "hot" conductor of a circuit is referred to as the ___ conductor in the NEC®. - correct answer--
ungrounded
When installed as the neutral for a 120-volt circuit, the neutral is considered to be a current-carrying
conductor. - correct answer--True
Which of the following is an example of a "device?" - correct answer--GFCI receptacle
The color of the insulation of a neutral conductor that is 8 AWG shall be ___.
I. white II. bare III. gray - correct answer--I or III only
An insulated grounded conductor of 6 AWG or smaller shall be identified by a continuous white or gray
outer finish or by ___ continuous white stripes on other than green insulation along its entire length. -
correct answer--3
What conductor in a circuit cannot be marked with a color of white or gray?
I. grounded II. equipment grounding III. ungrounded - correct answer--II & III only
, IEC FINAL EXAM QUESTIONS AND ANSWERS 2024-
2025
Where installed in conduit, which of the following wire colors are permitted for "hots," travelers, and
switch legs of a circuit?
I. black, red, and blue
II. brown, orange, and yellow
III. pink, black, and blue - correct answer--I or II or III
What conductor in a circuit can be marked with a green color?
I. grounded II. equipment grounding III. ungrounded - correct answer--II only
A luminaire has one blue wire and one white wire for field connection. When using cable (NM, AC, or
MC for example), the wire connected to the blue wire from the luminaire ___. - correct answer--must
have colored insulation (not green or white or gray)
The Code section that addresses sensor (automatic) control of lighting in a restaurant bathroom is ___.
Select N/A (not applicable) if there is not a Code reference for this. - correct answer--N/A
For stairway lighting, a typical installation is to install a 3-way switching system. For a commercial
building, ___ for stairway lighting control. - correct answer--there are no NEC® requirements
Both lamps are to be controlled from the switch. Which of the connection diagrams shown in Figure
112.511 is wired to operate correctly and does not violate 200.7 in the NEC®? Type AC 12-2 and 12-3
cables are used between the outlet boxes. Future wall access is available as required in NEC®
404.2(C)(2). - correct answer--IV only
Refer to Figure 112.512. The lamp on the right is to be ON constantly (as a night light) and the lamp on
the left is to be controlled from the switch. Which of the connection diagrams is wired to operate
correctly and does not violate 200.7 in the NEC®? Type AC 12-2 and 12-3 cables are used between the
outlet boxes. Future wall access is available as required in NEC® 404.2(C)(2). - correct answer--none of
these
, IEC FINAL EXAM QUESTIONS AND ANSWERS 2024-
2025
The lamp shown in Figure 122.514 is to be controlled from either switch. Which of the following
statements is true for Connection Diagram B? No wall access is available for future cable installation.
I. It is wired to operate correctly.
II. The markings on the white conductor do not violate 200.7(C)(1) in the NEC®.
III. This installation meets the requirements of NEC® 404.2(C). - correct answer--I, II & III
Which of the connection diagrams shown below is wired to operate correctly so that the lamp can be
controlled from any switch and the markings on the white conductors do not violate NEC® 200.7? Future
wall access is available as required in NEC® 404.2(C)(2). - correct answer--B.
Grounding is covered in Article ___ in the NEC®. - correct answer--250
For lighting circuits, NEC® Section 404.2(C) requires a(n) ___ conductor to be provided in each switch
box or enclosure. - correct answer--grounded
Light switches (toggle switches) are rated for the maximum ___.
I. voltage II. current - correct answer--both I & II
A ___ switch is permitted to be used to control a 120-volt fluorescent lighting circuit. - correct answer--
either a or b
Is it permitted to control a 120-volt incandescent (tungsten filament) lighting circuit with a switch rated
for 15 A and 120-277 V? The circuit has 9 fixtures and each fixture will have a 200 W, 120-V lamp
installed in it. - correct answer--Yes
CO/ALR switches must be used when aluminum building wire is to be terminated. - correct answer--
True
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