IEC year 1 AND YEAR 2 Final LATEST GRADED A NEW VERSION
WITH SOME 5 RELATED EXAMS
Where one or more complete paragraphs from the previous edition of the NEC®
have been deleted in the current edition, the deletion is identified by ___
between the remaining paragraphs.
a bullet ( • )
Are lighting fixtures in residential bedroom areas required to have AFCI
protection?
Yes
AFCI protection ___ when a 10-foot branch circuit extension is added to a
dwelling family room per the NEC®.
is required
Where installed in conduit, the following colors of insulation or marking are
permitted to identify "hot" phase conductors.
black, red, blue, brown, orange, yellow, pink, black, and blue
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
___.
,two 1-pole AFCI breakers with handle ties or one 2-pole AFCI breaker
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.
orange
b.black
c.brown
d.purple
any of these (correct)
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
Harmonic currents occur when ___ loads are connected to the circuit.
nonlinear
All conductors in a multiwire branch circuit shall originate from the same ___.
panelboard
,What is the maximum allowable voltage between conductors on a branch circuit
supplying lighting fixtures (luminaires) in a residence?
120 volts
What is the minimum number of 20-ampere branch circuits for small appliances
required in a residence?
2
Branch circuits that serve a ___ are required to be rated at 20 amperes where
installed in a house.
a.bathroom
b.kitchen
c.laundry room
d.all of the above (correct)
Branch circuits are rated according to ___.
the ampere rating of the overcurrent device
Refer to the Article 100 definition for continuous load in the NEC®. According to
210.19(A) the branch-circuit conductors for a continuous load shall be sized at
not less than ___ of the current drawn by the load.
, 125%
The smallest permissible wire size for branch circuit conductors supplying other
than cooking appliances is ___ AWG according to the NEC®.
14
When several receptacles are connected to a 20-ampere branch circuit, these
receptacles are required to be rated ___.
15 or 20 amperes
A ___-amp circuit breaker is the largest that can be installed on a 12 AWG
copper circuit conductor. The circuit is connected to several receptacles.
20
When a single receptacle is connected to a branch circuit (the circuit has no
other loads), the receptacle must have an ampere rating ___ the ampere rating
of the OCPD protecting the branch circuit.
greater than or equal to
Branch circuits are rated according to their ___.
overcurrent protective device rating
WITH SOME 5 RELATED EXAMS
Where one or more complete paragraphs from the previous edition of the NEC®
have been deleted in the current edition, the deletion is identified by ___
between the remaining paragraphs.
a bullet ( • )
Are lighting fixtures in residential bedroom areas required to have AFCI
protection?
Yes
AFCI protection ___ when a 10-foot branch circuit extension is added to a
dwelling family room per the NEC®.
is required
Where installed in conduit, the following colors of insulation or marking are
permitted to identify "hot" phase conductors.
black, red, blue, brown, orange, yellow, pink, black, and blue
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
___.
,two 1-pole AFCI breakers with handle ties or one 2-pole AFCI breaker
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.
orange
b.black
c.brown
d.purple
any of these (correct)
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
Harmonic currents occur when ___ loads are connected to the circuit.
nonlinear
All conductors in a multiwire branch circuit shall originate from the same ___.
panelboard
,What is the maximum allowable voltage between conductors on a branch circuit
supplying lighting fixtures (luminaires) in a residence?
120 volts
What is the minimum number of 20-ampere branch circuits for small appliances
required in a residence?
2
Branch circuits that serve a ___ are required to be rated at 20 amperes where
installed in a house.
a.bathroom
b.kitchen
c.laundry room
d.all of the above (correct)
Branch circuits are rated according to ___.
the ampere rating of the overcurrent device
Refer to the Article 100 definition for continuous load in the NEC®. According to
210.19(A) the branch-circuit conductors for a continuous load shall be sized at
not less than ___ of the current drawn by the load.
, 125%
The smallest permissible wire size for branch circuit conductors supplying other
than cooking appliances is ___ AWG according to the NEC®.
14
When several receptacles are connected to a 20-ampere branch circuit, these
receptacles are required to be rated ___.
15 or 20 amperes
A ___-amp circuit breaker is the largest that can be installed on a 12 AWG
copper circuit conductor. The circuit is connected to several receptacles.
20
When a single receptacle is connected to a branch circuit (the circuit has no
other loads), the receptacle must have an ampere rating ___ the ampere rating
of the OCPD protecting the branch circuit.
greater than or equal to
Branch circuits are rated according to their ___.
overcurrent protective device rating
