NCC PRACTICE TEST 6 2025
UPDATED QUESTIONS WITH
VERIFIED ANSWERS
Wire bundles are commonly secured using _____. - CORRECT ANSWER>>>>tie wraps
The NEC requires that all grounding electrodes be _____. - CORRECT ANSWER>>>>bonded
If it is necessary to oversize a motor to provide a wide speed range, it should not be increased by
more than _____. - CORRECT ANSWER>>>>1hp
When installing hammer-driven pins and studs in soft concrete block, the drive pin or stud
should be embedded in the concrete for at least _____. - CORRECT ANSWER>>>>1 1/4" (32
mm)
The maximum allowable spacing between horizontal wireway supports is _____. - CORRECT
ANSWER>>>>10'
If a mercury thermostat seems out of adjustment, the first thing to do is ____. - CORRECT
ANSWER>>>>check for accurate leveling
A type of anchor that is a good choice when jacking and leveling the fastening component is a
_____. - CORRECT ANSWER>>>>stud bolt anchor
Which of the following types of cable is suitable for dry locations only? - CORRECT
ANSWER>>>>Type NM
Wire connectors marked only with the wire size should only be used on _____. - CORRECT
ANSWER>>>>copper conductors
A conventional thermostat should not be thrown into the regular trash because it _____. -
CORRECT ANSWER>>>>may contain mercury
Another name for a standoff support is a _____. - CORRECT ANSWER>>>>Minerallac
A self-contained meter installation refers to ____. - CORRECT ANSWER>>>>a single meter
enclosure
A type of fastener with a bugle-shaped head is a ____. - CORRECT ANSWER>>>>drywall
screw
Heat-shrink insulators are intented to provide _____. - CORRECT ANSWER>>>>strain relief
and mechanical protection
, The tubing that carries heat-laden refrigerant gas from the evaporator to the compressor is known
as the _____. - CORRECT ANSWER>>>>suction line
Which of the following principles states that heat is created in one place and carried to another
by means of air or water? - CORRECT ANSWER>>>>Heat-transfer principle
A typical metric fastener size is ____. - CORRECT ANSWER>>>>M8 x 1
A type of conduit body with a 90 degree connector and the cover on the left is a _____. -
CORRECT ANSWER>>>>Type LL
EMT must be supported every ____. - CORRECT ANSWER>>>>10ft
The purpose of the defrost cycle in a heat pump is to ____. - CORRECT ANSWER>>>>prevent
ice buildup on the outdoor coil
A true statement concerning solid versus stranded conductors is _____. - CORRECT
ANSWER>>>>the diameters are different
Cable trays mounted in a tunnel are most likely to use ____. - CORRECT ANSWER>>>>wall
mounting
The best electrical tape to use as a protective overwrap on high-voltage cables is ____. -
CORRECT ANSWER>>>>high-temperature silicone rubber
figure - CORRECT ANSWER>>>>autotransformer reduced-voltage starter
It is important to do which of the following when conductors are fed into long runs of conduit? -
CORRECT ANSWER>>>>Make sure the wires are straight and do not cross over each other.
Which of the following inscriptions on a wire connector indicates that it is designed for use on
both copper and aluminum wire? - CORRECT ANSWER>>>>AL-CU
NEC Article 386 contains_____. - CORRECT ANSWER>>>>the installation specifications of
surface metal raceways
Which of the following is true of drain wires in fire alarm and instrumentation cable? -
CORRECT ANSWER>>>>Only one end is typically grounded.
Derating factors shall only be applied when the number of current-carrying conductors in a
wireway exceeds _____. - CORRECT ANSWER>>>>30
Which of these devices can retain a high-voltage charge after power has been removed? -
CORRECT ANSWER>>>>Capacitors used in motor circuits
UPDATED QUESTIONS WITH
VERIFIED ANSWERS
Wire bundles are commonly secured using _____. - CORRECT ANSWER>>>>tie wraps
The NEC requires that all grounding electrodes be _____. - CORRECT ANSWER>>>>bonded
If it is necessary to oversize a motor to provide a wide speed range, it should not be increased by
more than _____. - CORRECT ANSWER>>>>1hp
When installing hammer-driven pins and studs in soft concrete block, the drive pin or stud
should be embedded in the concrete for at least _____. - CORRECT ANSWER>>>>1 1/4" (32
mm)
The maximum allowable spacing between horizontal wireway supports is _____. - CORRECT
ANSWER>>>>10'
If a mercury thermostat seems out of adjustment, the first thing to do is ____. - CORRECT
ANSWER>>>>check for accurate leveling
A type of anchor that is a good choice when jacking and leveling the fastening component is a
_____. - CORRECT ANSWER>>>>stud bolt anchor
Which of the following types of cable is suitable for dry locations only? - CORRECT
ANSWER>>>>Type NM
Wire connectors marked only with the wire size should only be used on _____. - CORRECT
ANSWER>>>>copper conductors
A conventional thermostat should not be thrown into the regular trash because it _____. -
CORRECT ANSWER>>>>may contain mercury
Another name for a standoff support is a _____. - CORRECT ANSWER>>>>Minerallac
A self-contained meter installation refers to ____. - CORRECT ANSWER>>>>a single meter
enclosure
A type of fastener with a bugle-shaped head is a ____. - CORRECT ANSWER>>>>drywall
screw
Heat-shrink insulators are intented to provide _____. - CORRECT ANSWER>>>>strain relief
and mechanical protection
, The tubing that carries heat-laden refrigerant gas from the evaporator to the compressor is known
as the _____. - CORRECT ANSWER>>>>suction line
Which of the following principles states that heat is created in one place and carried to another
by means of air or water? - CORRECT ANSWER>>>>Heat-transfer principle
A typical metric fastener size is ____. - CORRECT ANSWER>>>>M8 x 1
A type of conduit body with a 90 degree connector and the cover on the left is a _____. -
CORRECT ANSWER>>>>Type LL
EMT must be supported every ____. - CORRECT ANSWER>>>>10ft
The purpose of the defrost cycle in a heat pump is to ____. - CORRECT ANSWER>>>>prevent
ice buildup on the outdoor coil
A true statement concerning solid versus stranded conductors is _____. - CORRECT
ANSWER>>>>the diameters are different
Cable trays mounted in a tunnel are most likely to use ____. - CORRECT ANSWER>>>>wall
mounting
The best electrical tape to use as a protective overwrap on high-voltage cables is ____. -
CORRECT ANSWER>>>>high-temperature silicone rubber
figure - CORRECT ANSWER>>>>autotransformer reduced-voltage starter
It is important to do which of the following when conductors are fed into long runs of conduit? -
CORRECT ANSWER>>>>Make sure the wires are straight and do not cross over each other.
Which of the following inscriptions on a wire connector indicates that it is designed for use on
both copper and aluminum wire? - CORRECT ANSWER>>>>AL-CU
NEC Article 386 contains_____. - CORRECT ANSWER>>>>the installation specifications of
surface metal raceways
Which of the following is true of drain wires in fire alarm and instrumentation cable? -
CORRECT ANSWER>>>>Only one end is typically grounded.
Derating factors shall only be applied when the number of current-carrying conductors in a
wireway exceeds _____. - CORRECT ANSWER>>>>30
Which of these devices can retain a high-voltage charge after power has been removed? -
CORRECT ANSWER>>>>Capacitors used in motor circuits
