YEAR 1 FINAL 128-135 QUESTIONS &
VERIFIED RATIONALIZED ANSWERS
100% GUARANTEE PASS
c When loads such as lamps, motors, and heaters are connected to one circuit of a multiwire branch
circuit, these loads are connected in ___. - parallel
Two 20-amp circuits with a shared neutral are fed from a 120/240-volt, 1Ø panel. If the ungrounded
circuit conductors are connected to breakers 1 and 2, which of the following will happen when a 16-amp
load is connected to Circuit 1 and a 14-amp load is connected to Circuit 2? - The grounded (neutral)
conductor will be overloaded.
Circuits 7 and 9 share a neutral. This is a multiwire branch circuit. If Ckt. 7 is drawing 13 amps and Ckt. 9
is drawing 16 amps, how much current is flowing in the neutral? - 3
What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads? - The
load of higher resistance would overheat and probably be damaged
Voltmeters are connected in ___ with the load when used to measure voltage across a load in a circuit. -
parallel
A multiwire branch circuit from a 120/240-volt 1Ø, 3-wire panelboard will be used to supply power to a
double single-pole switch.
The NEC® requires that a multiwire branch circuit supplying more than one device or equipment on the
same yoke have a means to simultaneously disconnect all ungrounded conductors at the panelboard
where the branch circuit originated. This means that ___ can be used to disconnect the circuits from the
receptacle. - one two-pole circuit breaker
In an office building, 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 breakers
,II. two individual single-pole circuit breakers with handle ties
III. a two-pole circuit breaker - II or III only
The Code reference that specifies the type of disconnecting means (circuit breaker for example) that can
be used on a multiwire branch circuit that feeds devices mounted on the same yoke [a stack switch or a
duplex receptacle for example] is ___.Note: Select N/A ( not applicable) if there is not an NEC®
requirement. - 240.15(B)(1)
Multiwire branch circuit LA-2,4 is installed using 14-3 AC cable to supply power to two receptacles. The
14-3 cable enters the first receptacle box then 14-2 cable exits this box and continues to the second
receptacle box. The NEC® permits the two grounded conductors that enter and exit the first box to be
___.
I. directly connected to the terminal screws on the receptacle
II. connected together with a wire nut and a pigtail from there to the receptacle terminal screw - II only
The battery compartment in an offshore service boat contains ten 18-volt batteries to operate a small
crane that requires 90 volts to operate. The ten batteries are connected in ___. - combo series/parallel
What is the minimum number of receptacles required in an unfinished basement? - 1
Trade size ___ is the minimum size RMC (rigid metal conduit) that can contain six each 8 AWG copper
THHN/THWN conductors. - 3/4
Raceways ___ required to be completely installed between boxes before pulling in the wires. - are
A piece of FMC (flexible metal conduit) must be at least a trade size ___ where twelve each 8 AWG
THHN/THWN conductors are to be installed. - 1 1/4
Trade size ___ is the minimum size Schedule 40 PVC (rigid polyvinyl chloride conduit) that can contain
thirteen each 8 AWG copper THHN/THWN conductors. - 1 1/4
The number of conductors permitted in 80 PVC is specified in Table ___. - C.10, Annex C
, Which of these trade size 1/2 inch raceways has the smallest inside diameter? Refer to the appropriate
table among those shown in NEC® Chapter 9 - Table 4. - Electrical Nonmetallic Tubing
What part of the NEC® is a reference for calculating conduit fill where all conductors are the same size? -
Annex C
What is the minimum trade size EMT required to contain three 1/0 AWG THHN/THWN copper
conductors? - 1 1/4
What is the minimum trade size EMT required to contain four 8 AWG THHN/THWN copper conductors? -
none of these
What is the minimum size LFMC (liquidtight flexible metal conduit) required where sixteen 10 AWG
THHN/THWN copper conductors are to be pulled into the conduit? - 1
What is the minimum trade size Schedule 80 PVC required to contain four 8 AWG THHN/THWN copper
conductors? - 3/4
This is a 11/2 trade size RMC with the approximate dimensions. A single 3 AWG THWN/THHN conductor
is shown lying inside the conduit. If a run of conduit was made between two pull boxes, the maximum
number of these 3 AWG conductors that can be installed in the RMC is ___. - 8
What is the minimum trade size Schedule 80 PVC required to contain four 8 AWG THHN/THWN copper
conductors? - 3/4
What is the minimum size Schedule 40 PVC required where sixteen 10 AWG THHN/THWN copper
conductors are to be pulled into the conduit - 1 1/4
A short length of EMT is run between two panels. The ampacity values for the conductors in this EMT
need not be derated, as long as the length of the EMT does not exceed ___. - 24 inches
VERIFIED RATIONALIZED ANSWERS
100% GUARANTEE PASS
c When loads such as lamps, motors, and heaters are connected to one circuit of a multiwire branch
circuit, these loads are connected in ___. - parallel
Two 20-amp circuits with a shared neutral are fed from a 120/240-volt, 1Ø panel. If the ungrounded
circuit conductors are connected to breakers 1 and 2, which of the following will happen when a 16-amp
load is connected to Circuit 1 and a 14-amp load is connected to Circuit 2? - The grounded (neutral)
conductor will be overloaded.
Circuits 7 and 9 share a neutral. This is a multiwire branch circuit. If Ckt. 7 is drawing 13 amps and Ckt. 9
is drawing 16 amps, how much current is flowing in the neutral? - 3
What is the result if the neutral wire becomes open on a multiwire circuit having unequal loads? - The
load of higher resistance would overheat and probably be damaged
Voltmeters are connected in ___ with the load when used to measure voltage across a load in a circuit. -
parallel
A multiwire branch circuit from a 120/240-volt 1Ø, 3-wire panelboard will be used to supply power to a
double single-pole switch.
The NEC® requires that a multiwire branch circuit supplying more than one device or equipment on the
same yoke have a means to simultaneously disconnect all ungrounded conductors at the panelboard
where the branch circuit originated. This means that ___ can be used to disconnect the circuits from the
receptacle. - one two-pole circuit breaker
In an office building, 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 breakers
,II. two individual single-pole circuit breakers with handle ties
III. a two-pole circuit breaker - II or III only
The Code reference that specifies the type of disconnecting means (circuit breaker for example) that can
be used on a multiwire branch circuit that feeds devices mounted on the same yoke [a stack switch or a
duplex receptacle for example] is ___.Note: Select N/A ( not applicable) if there is not an NEC®
requirement. - 240.15(B)(1)
Multiwire branch circuit LA-2,4 is installed using 14-3 AC cable to supply power to two receptacles. The
14-3 cable enters the first receptacle box then 14-2 cable exits this box and continues to the second
receptacle box. The NEC® permits the two grounded conductors that enter and exit the first box to be
___.
I. directly connected to the terminal screws on the receptacle
II. connected together with a wire nut and a pigtail from there to the receptacle terminal screw - II only
The battery compartment in an offshore service boat contains ten 18-volt batteries to operate a small
crane that requires 90 volts to operate. The ten batteries are connected in ___. - combo series/parallel
What is the minimum number of receptacles required in an unfinished basement? - 1
Trade size ___ is the minimum size RMC (rigid metal conduit) that can contain six each 8 AWG copper
THHN/THWN conductors. - 3/4
Raceways ___ required to be completely installed between boxes before pulling in the wires. - are
A piece of FMC (flexible metal conduit) must be at least a trade size ___ where twelve each 8 AWG
THHN/THWN conductors are to be installed. - 1 1/4
Trade size ___ is the minimum size Schedule 40 PVC (rigid polyvinyl chloride conduit) that can contain
thirteen each 8 AWG copper THHN/THWN conductors. - 1 1/4
The number of conductors permitted in 80 PVC is specified in Table ___. - C.10, Annex C
, Which of these trade size 1/2 inch raceways has the smallest inside diameter? Refer to the appropriate
table among those shown in NEC® Chapter 9 - Table 4. - Electrical Nonmetallic Tubing
What part of the NEC® is a reference for calculating conduit fill where all conductors are the same size? -
Annex C
What is the minimum trade size EMT required to contain three 1/0 AWG THHN/THWN copper
conductors? - 1 1/4
What is the minimum trade size EMT required to contain four 8 AWG THHN/THWN copper conductors? -
none of these
What is the minimum size LFMC (liquidtight flexible metal conduit) required where sixteen 10 AWG
THHN/THWN copper conductors are to be pulled into the conduit? - 1
What is the minimum trade size Schedule 80 PVC required to contain four 8 AWG THHN/THWN copper
conductors? - 3/4
This is a 11/2 trade size RMC with the approximate dimensions. A single 3 AWG THWN/THHN conductor
is shown lying inside the conduit. If a run of conduit was made between two pull boxes, the maximum
number of these 3 AWG conductors that can be installed in the RMC is ___. - 8
What is the minimum trade size Schedule 80 PVC required to contain four 8 AWG THHN/THWN copper
conductors? - 3/4
What is the minimum size Schedule 40 PVC required where sixteen 10 AWG THHN/THWN copper
conductors are to be pulled into the conduit - 1 1/4
A short length of EMT is run between two panels. The ampacity values for the conductors in this EMT
need not be derated, as long as the length of the EMT does not exceed ___. - 24 inches
