IEC YEAR 2 PART 2 COMPLETE
DETAILED CASE STUDY
Where contained in a cable, the Code reference that states when a conductor with white insulation may
be used as an ungrounded circuit conductor is in Section ___. - 200.7(C)
The NEC® and ___ require that all switchboards, panelboards and industrial motor control panels shall
be field marked to warn qualified persons of arc flash hazards. - NFPA70E
To assure an electrically safe work condition when working on switchboards and panelboards, the power
supplying switchboards or panelboards must be turned off and all ___ procedures must be followed. - all
of these
A qualified person is one who has ___ of the hazards involved and what precautions must be taken to
prevent any personal harm or equipment damage. - all of these
When installing panelboards or switchboards, you must follow all manufacturer's installation
requirements. - True
Unused openings in panelboards can be closed using ___. - listed fillers
NEC® Article 110.16 requires that switchboards, panelboards, and industrial motor control panels in
other than dwelling occupancies that are likely to require examination, adjustment, servicing, or
maintenance while energized shall be field marked to warn qualified persons of ___. - arc flash hazards
Listing and labeling information included with panelboards and switchboards contains information
regarding the correct ___ of the equipment.I. inspection II. mounting - both I & II
The qualified person must also have knowledge in the selection and proper care and use of ___ and
other safety equipment and tools. - PPE
Arc-fault requirements for dwelling units are found in Section ___. - 210.12
,In dwelling units, GFCI protection is required in ___. - bathrooms
The disconnecting means for a multiwire branch circuit shall open all ___ at the point of origin. -
ungrounded
The requirements for the minimum number of branch circuits in a dwelling is found in ___. - 210.11
In a single-family dwelling the receptacles shall be installed so that no point measured along the floorline
is more than ___ ft. to the nearest outlet. - 6
In dwelling units, receptacles supplying countertops in the dining room shall be installed so that no point
along the wall is more than ___ inches to the nearest receptacle. - 24
A duplex receptacle installed on a 20-ampere branch circuit shall have a minimum ampere rating of ___.
- 15
A single receptacle installed on a 20-ampere 120-volt circuit shall have an ampere rating of ___. - 20
Conductors supplying more than one receptacle for cord-and-plug connected portable loads shall have
an ampacity of not less than ___. - the branch circuit rating
Are smoke detectors in residential bedroom areas required to have AFCI protection? - Yes
In your home, Circuit 22 supplies the upper half and Circuit 24 supplies the lower half of a duplex
receptacle. These breakers are permitted to be ___. I. two individual single-pole circuit breakersII. two
individual single-pole circuit breakers with handle tiesIII. a two-pole circuit breaker - II or III only
In a dwelling, a single receptacle installed for the cord connection to a dishwasher located 2 feet from a
kitchen sink but below a countertop requires GFCI protection. - True
,Refer to Figure 130.107. The fewest number of AFCI circuit breakers that are required to be installed in
Panel B is ___. - 14
Guest suites of hotels with permanent cooking provisions shall be required to have AFCI protection for
the bedrooms according to ___ in the NEC®. - 210.12(C)
AFCI protection ___ when a 10-foot branch circuit extension is added to a dwelling family room per the
NEC®. - is required
Per the NEC®, receptacles that are installed outdoors at a fast food establishment ___ required to be
GFCI protected. These are accessible to the public. - are
Branch circuits that serve a ___ are required to be rated at 20 amperes where installed in a house. - all of
the above
Where installed in conduit, the following colors of insulation or marking are permitted to identify "hot"
phase conductors. I. black, red, and blue II. brown, orange, and yellow III. pink, black, and blue - I or II or
III
Harmonic currents occur when ___ loads are connected to the circuit. - nonlinear
A non-dwelling kitchen plan view is shown in Figure 201.62. Which receptacles are required by the NEC®
to be GFCI protected? The range receptacle is 50A and the ovens receptacle is 60A. - all except 5
A residential kitchen plan view is shown in Figure 201.62. Which receptacles are required by the NEC® to
be GFCI protected? - all except 2, 3, 4, 5 & 7
A ___-volt circuit is permitted to supply the auxiliary equipment (ballasts for example) of HID luminaires
where installed outdoors on 24-foot poles. All voltage systems are grounded.I. 277 II. 120 III. 480 IV. 208 -
I, II, III or IV
Where a 120/240-volt, 1Ø, 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
. 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
What is the maximum allowable voltage between conductors on a branch circuit supplying lighting
fixtures (luminaires) in a residence? - 120 volts
The NEC® requires two separate ___-ampere receptacle branch circuits for kitchens because cord-
connected appliances used in residential kitchens (such as coffee makers, toasters, microwave ovens,
and slow cookers) use a lot of current. - 20
You are to install a 20-amp multiwire branch circuit that is fed from the breaker(s) in spaces 2 & 4 in the
panelboard shown in Figure 128.182. The circuits supply receptacles in the living room in a house. The
breakers can be ___. - one 2-pole AFCI breaker
A duplex receptacle with two circuits on the same yoke is permitted to have ___ as a means of
disconnect. I. two single-pole circuit breakers without tie handlesII. one double-pole circuit breakerIII.
two single-pole circuit breakers with tie handles - II or III only
What is the minimum number of 20-ampere branch circuits for small appliances required in a residence?
-2
In a dwelling, how many 20-amp branch circuits are required by the NEC® to supply power to an area
where a clothes washing machine is to be plugged into a receptacle? - at least one
For a 277/480-V, 3-ph, 4-W wiring system, the NEC® permits the insulation for any of the ungrounded
conductors to be ___ in color. - any of these
Branch circuits that serve a ___ are required to be rated at 20 amperes where installed in a school.I.
bathroom II. kitchen III. clothes washing machine - neither I nor II nor III
DETAILED CASE STUDY
Where contained in a cable, the Code reference that states when a conductor with white insulation may
be used as an ungrounded circuit conductor is in Section ___. - 200.7(C)
The NEC® and ___ require that all switchboards, panelboards and industrial motor control panels shall
be field marked to warn qualified persons of arc flash hazards. - NFPA70E
To assure an electrically safe work condition when working on switchboards and panelboards, the power
supplying switchboards or panelboards must be turned off and all ___ procedures must be followed. - all
of these
A qualified person is one who has ___ of the hazards involved and what precautions must be taken to
prevent any personal harm or equipment damage. - all of these
When installing panelboards or switchboards, you must follow all manufacturer's installation
requirements. - True
Unused openings in panelboards can be closed using ___. - listed fillers
NEC® Article 110.16 requires that switchboards, panelboards, and industrial motor control panels in
other than dwelling occupancies that are likely to require examination, adjustment, servicing, or
maintenance while energized shall be field marked to warn qualified persons of ___. - arc flash hazards
Listing and labeling information included with panelboards and switchboards contains information
regarding the correct ___ of the equipment.I. inspection II. mounting - both I & II
The qualified person must also have knowledge in the selection and proper care and use of ___ and
other safety equipment and tools. - PPE
Arc-fault requirements for dwelling units are found in Section ___. - 210.12
,In dwelling units, GFCI protection is required in ___. - bathrooms
The disconnecting means for a multiwire branch circuit shall open all ___ at the point of origin. -
ungrounded
The requirements for the minimum number of branch circuits in a dwelling is found in ___. - 210.11
In a single-family dwelling the receptacles shall be installed so that no point measured along the floorline
is more than ___ ft. to the nearest outlet. - 6
In dwelling units, receptacles supplying countertops in the dining room shall be installed so that no point
along the wall is more than ___ inches to the nearest receptacle. - 24
A duplex receptacle installed on a 20-ampere branch circuit shall have a minimum ampere rating of ___.
- 15
A single receptacle installed on a 20-ampere 120-volt circuit shall have an ampere rating of ___. - 20
Conductors supplying more than one receptacle for cord-and-plug connected portable loads shall have
an ampacity of not less than ___. - the branch circuit rating
Are smoke detectors in residential bedroom areas required to have AFCI protection? - Yes
In your home, Circuit 22 supplies the upper half and Circuit 24 supplies the lower half of a duplex
receptacle. These breakers are permitted to be ___. I. two individual single-pole circuit breakersII. two
individual single-pole circuit breakers with handle tiesIII. a two-pole circuit breaker - II or III only
In a dwelling, a single receptacle installed for the cord connection to a dishwasher located 2 feet from a
kitchen sink but below a countertop requires GFCI protection. - True
,Refer to Figure 130.107. The fewest number of AFCI circuit breakers that are required to be installed in
Panel B is ___. - 14
Guest suites of hotels with permanent cooking provisions shall be required to have AFCI protection for
the bedrooms according to ___ in the NEC®. - 210.12(C)
AFCI protection ___ when a 10-foot branch circuit extension is added to a dwelling family room per the
NEC®. - is required
Per the NEC®, receptacles that are installed outdoors at a fast food establishment ___ required to be
GFCI protected. These are accessible to the public. - are
Branch circuits that serve a ___ are required to be rated at 20 amperes where installed in a house. - all of
the above
Where installed in conduit, the following colors of insulation or marking are permitted to identify "hot"
phase conductors. I. black, red, and blue II. brown, orange, and yellow III. pink, black, and blue - I or II or
III
Harmonic currents occur when ___ loads are connected to the circuit. - nonlinear
A non-dwelling kitchen plan view is shown in Figure 201.62. Which receptacles are required by the NEC®
to be GFCI protected? The range receptacle is 50A and the ovens receptacle is 60A. - all except 5
A residential kitchen plan view is shown in Figure 201.62. Which receptacles are required by the NEC® to
be GFCI protected? - all except 2, 3, 4, 5 & 7
A ___-volt circuit is permitted to supply the auxiliary equipment (ballasts for example) of HID luminaires
where installed outdoors on 24-foot poles. All voltage systems are grounded.I. 277 II. 120 III. 480 IV. 208 -
I, II, III or IV
Where a 120/240-volt, 1Ø, 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
. 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
What is the maximum allowable voltage between conductors on a branch circuit supplying lighting
fixtures (luminaires) in a residence? - 120 volts
The NEC® requires two separate ___-ampere receptacle branch circuits for kitchens because cord-
connected appliances used in residential kitchens (such as coffee makers, toasters, microwave ovens,
and slow cookers) use a lot of current. - 20
You are to install a 20-amp multiwire branch circuit that is fed from the breaker(s) in spaces 2 & 4 in the
panelboard shown in Figure 128.182. The circuits supply receptacles in the living room in a house. The
breakers can be ___. - one 2-pole AFCI breaker
A duplex receptacle with two circuits on the same yoke is permitted to have ___ as a means of
disconnect. I. two single-pole circuit breakers without tie handlesII. one double-pole circuit breakerIII.
two single-pole circuit breakers with tie handles - II or III only
What is the minimum number of 20-ampere branch circuits for small appliances required in a residence?
-2
In a dwelling, how many 20-amp branch circuits are required by the NEC® to supply power to an area
where a clothes washing machine is to be plugged into a receptacle? - at least one
For a 277/480-V, 3-ph, 4-W wiring system, the NEC® permits the insulation for any of the ungrounded
conductors to be ___ in color. - any of these
Branch circuits that serve a ___ are required to be rated at 20 amperes where installed in a school.I.
bathroom II. kitchen III. clothes washing machine - neither I nor II nor III
