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IEC Final Exam Questions and Correct Answers the Latest Update and Recommended Version

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Which of these is the symbol used for a 4-way switch? → c.$4 Lighted handle toggle switches utilize a neon lamp that is illuminated when the switch is in the ___ position. → b.OFF The ungrounded conductor is often called the ___. → hot Drawing ___ in Figure 112.415 is a framed locking...

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2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!


IEC Final Exam Questions and Correct
Answers the Latest Update and
Recommended Version
Which of these is the symbol used for a 4-way switch?


→ c.$4


Lighted handle toggle switches utilize a neon lamp that is illuminated when the switch is in the

___ position.

→ b.OFF


The ungrounded conductor is often called the ___.

→ hot


Drawing ___ in Figure 112.415 is a framed locking (not key-lock) type switch.


→ Not D.VI or E.None of these


To convert a conventional duplex receptacle into a split-wired receptacle, the ___ is removed.

→ tab


Refer to Figure 112.31. The light is ___.

→ 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.


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,2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!

→ 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.

→ Not ungrounded


What type of switch would you use to control a lighting load from one location only?

→ Single pole


SPST is an abbreviation for ___.


→ Single Pole-Single Throw


The neutral conductor of a 120-volt circuit is referred to as the ___ conductor in the NEC®.

→ grounded


The "hot" conductor of a circuit is referred to as the ___ conductor in the NEC®.

→ ungrounded


When installed as the neutral for a 120-volt circuit, the neutral is considered to be a current-

carrying conductor.

→ True


Which of the following is an example of a "device?"

→ GFCI receptacle


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,2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!

The color of the insulation of a neutral conductor that is 8 AWG shall be ___.

I. white II. bare III. gray


→ 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.

→ 3


What conductor in a circuit cannot be marked with a color of white or gray?

I. grounded II. equipment grounding III. ungrounded

→ II & III only


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

→ I or II or III


What conductor in a circuit can be marked with a green color?

I. grounded II. equipment grounding III. ungrounded

→ II only



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, 2 0 2 4 /2025 | © copyright | This work may not be copied for profit gain Excel!

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 ___.

→ 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.


→ N/A


For stairway lighting, a typical installation is to install a 3-way switching system. For a

commercial building, ___ for stairway lighting control.

→ 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).

→ 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).

→ none of these




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