IEC YEAR 1 EXAM 2024-2025 ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
Which of these is the symbol used for a 4-way switch? - (answer) c.$4
Lighted handle toggle switches utilize a neon lamp that is illuminated when the switch is in the ___
position. - (answer) b.OFF
The ungrounded conductor is often called the ___. - (answer) hot
Drawing ___ in Figure 112.415 is a framed locking (not key-lock) type switch. - (answer) Not D.VI or
E.None of these
To convert a conventional duplex receptacle into a split-wired receptacle, the ___ is removed. - (answer)
tab
Refer to Figure 112.31. The light is ___. - (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. - (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. -
(answer) Not ungrounded
What type of switch would you use to control a lighting load from one location only? - (answer) Single
pole
SPST is an abbreviation for ___. - (answer) Single Pole-Single Throw
The neutral conductor of a 120-volt circuit is referred to as the ___ conductor in the NEC®. - (answer)
grounded
,IEC YEAR 1 EXAM 2024-2025 ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
The "hot" conductor of a circuit is referred to as the ___ conductor in the NEC®. - (answer) ungrounded
When installed as the neutral for a 120-volt circuit, the neutral is considered to be a current-carrying
conductor. - (answer) True
Which of the following is an example of a "device?" - (answer) GFCI receptacle
The color of the insulation of a neutral conductor that is 8 AWG shall be ___.
I. white II. bare III. gray - (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. -
(answer) 3
What conductor in a circuit cannot be marked with a color of white or gray?
I. grounded II. equipment grounding III. ungrounded - (answer) 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 - (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 - (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 ___. - (answer) must have
colored insulation (not green or white or gray)
,IEC YEAR 1 EXAM 2024-2025 ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
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. - (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. - (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).
- (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). - (answer) none of these
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). - (answer) Not I & II only
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). - (answer) B , 2nd option pic
Grounding is covered in Article ___ in the NEC®. - (answer) 250
For lighting circuits, NEC® Section 404.2(C) requires a(n) ___ conductor to be provided in each switch box
or enclosure. - (answer) grounded
, IEC YEAR 1 EXAM 2024-2025 ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
Light switches (toggle switches) are rated for the maximum ___.
I. voltage II. current - (answer) both I & II
A ___ switch is permitted to be used to control a 120-volt fluorescent lighting circuit. - (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. - (answer) Yes
CO/ALR switches must be used when aluminum building wire is to be terminated. - (answer) True
A single-pole, double-throw switch has ___ screw terminals for the connection of current-carrying circuit
conductors. - (answer) Not Four
For the connection of current-carrying circuit conductors, a DPST switch has ___ screw terminals. -
(answer) four
Refer to Figure 112.020. In Diagram II, are the conductors correctly connected so that the light can be
controlled from either switch? - (answer) Yes
Refer to Figure 112.040. Which wiring diagram is correctly connected for a pilot light switch? - (answer)
IV
Refer to Figure 112.711. Switch 2 controls the ___. - (answer) luminaire
A circuit breaker is a switch that when in the "off" position ___ the circuit. - (answer) opens
The switch element at Point B in Figure 112.411 is the ___ of the switch. - (answer) Not Body
Which of these is the symbol used for a 4-way switch? - (answer) c.$4
Lighted handle toggle switches utilize a neon lamp that is illuminated when the switch is in the ___
position. - (answer) b.OFF
The ungrounded conductor is often called the ___. - (answer) hot
Drawing ___ in Figure 112.415 is a framed locking (not key-lock) type switch. - (answer) Not D.VI or
E.None of these
To convert a conventional duplex receptacle into a split-wired receptacle, the ___ is removed. - (answer)
tab
Refer to Figure 112.31. The light is ___. - (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. - (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. -
(answer) Not ungrounded
What type of switch would you use to control a lighting load from one location only? - (answer) Single
pole
SPST is an abbreviation for ___. - (answer) Single Pole-Single Throw
The neutral conductor of a 120-volt circuit is referred to as the ___ conductor in the NEC®. - (answer)
grounded
,IEC YEAR 1 EXAM 2024-2025 ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
The "hot" conductor of a circuit is referred to as the ___ conductor in the NEC®. - (answer) ungrounded
When installed as the neutral for a 120-volt circuit, the neutral is considered to be a current-carrying
conductor. - (answer) True
Which of the following is an example of a "device?" - (answer) GFCI receptacle
The color of the insulation of a neutral conductor that is 8 AWG shall be ___.
I. white II. bare III. gray - (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. -
(answer) 3
What conductor in a circuit cannot be marked with a color of white or gray?
I. grounded II. equipment grounding III. ungrounded - (answer) 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 - (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 - (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 ___. - (answer) must have
colored insulation (not green or white or gray)
,IEC YEAR 1 EXAM 2024-2025 ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
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. - (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. - (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).
- (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). - (answer) none of these
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). - (answer) Not I & II only
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). - (answer) B , 2nd option pic
Grounding is covered in Article ___ in the NEC®. - (answer) 250
For lighting circuits, NEC® Section 404.2(C) requires a(n) ___ conductor to be provided in each switch box
or enclosure. - (answer) grounded
, IEC YEAR 1 EXAM 2024-2025 ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
Light switches (toggle switches) are rated for the maximum ___.
I. voltage II. current - (answer) both I & II
A ___ switch is permitted to be used to control a 120-volt fluorescent lighting circuit. - (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. - (answer) Yes
CO/ALR switches must be used when aluminum building wire is to be terminated. - (answer) True
A single-pole, double-throw switch has ___ screw terminals for the connection of current-carrying circuit
conductors. - (answer) Not Four
For the connection of current-carrying circuit conductors, a DPST switch has ___ screw terminals. -
(answer) four
Refer to Figure 112.020. In Diagram II, are the conductors correctly connected so that the light can be
controlled from either switch? - (answer) Yes
Refer to Figure 112.040. Which wiring diagram is correctly connected for a pilot light switch? - (answer)
IV
Refer to Figure 112.711. Switch 2 controls the ___. - (answer) luminaire
A circuit breaker is a switch that when in the "off" position ___ the circuit. - (answer) opens
The switch element at Point B in Figure 112.411 is the ___ of the switch. - (answer) Not Body
