ARTICLE 110- REQUIREMENTS FOR ELECTRICAL INSTALLATIONS EXAM QUESTIONS ANSWERED
CORRECTLY LATEST UPDATE 2026
The conductors and equipment required or permitted by this Code shall be acceptable only if _____. -
Answers approved
In judging equipment for approval, considerations such as _____ shall be evaluated - Answers
mechanical strength, wire-bending space, and arcing effects
Listed or labeled equipment shall be - Answers installed and used in accordance with any instructions
included in the listing or labeling.
Product testing, evaluation, and listing (product certification) shall be performed by _____. - Answers
recognized qualified electrical testing laboratories
Where electrical conductor material is not specified, the sizes given in the NEC shall apply to _____
conductors. - Answers copper
Conductor sizes are expressed in American Wire Gage (AWG) or in _____. - Answers circular mils
Wiring shall be installed so that the completed system will be free from _____, other than as required
or permitted elsewhere in the Code. - Answers short circuits, ground faults, and connections to the
earth
Only wiring methods recognized as _____ are included in this Code. - Answers suitable
Equipment intended to interrupt current at fault levels shall __________. - Answers have an
interrupting rating at nominal circuit voltage at least equal to the current that is available at the line
terminals of the equipment.
The ______, and other characteristics of the circuit to be protected shall be selected and coordinated
to permit the circuit protective devices used to clear a fault to do so without extensive damage to the
electrical equipment of the circuit. - Answers overcurrent protective devices, total impedance, and
equipment short-circuit current ratings
Unless identified for use in the operating environment, no conductors or equipment shall be _____
having a deteriorating effect on the conductors or equipment. - Answers located in damp or wet
locations, exposed to fumes, vapors, liquids, or gases, and exposed to excessive temperatures
Some cleaning and lubricating compounds can cause _____. - Answers severe deterioration of many
plastic materials used for insulating and structural applications in equipment.
Equipment not _____ for outdoor use or identified for indoor use such as "dry locations" or "indoor
use only", shall be protected against damage from the weather during construction. - Answers
identified
The NEC requires that electrical equipment be _____. - Answers installed in a neat and workmanlike
manner
Unused openings other than those intended for the operation of equipment, intended for mounting
purposes, or permitted as part of the design for listed equipment shall be _____. - Answers closed to
afford protection substantially equivalent to the wall of the equipment
Internal parts of electrical equipment, including busbars, wiring terminals, insulators, and other
surfaces, shall not be damaged or contaminated by foreign materials such as _____, or corrosive
residues. - Answers paint and plaster, cleaners, and/or abrasives
Cables and conductors installed exposed on the surfaces of ceilings and sidewalls shall be secured by
hardware including straps, staples, cable ties, hangers, or _____ fittings designed and installed so as
not to damage the cable. - Answers simila
Conductor terminal and splicing devices shall be _____ for the conductor material and they shall be
properly installed and used. - Answers identified
Connectors and terminals for conductors more finely stranded than Class B and Class C, as shown in
Table 10 of Chapter 9, shall be _____ for the specific conductor class or classes. - Answers Identified
Connection of conductors to terminal parts shall ensure a thoroughly good connection without
damaging the conductors and shall be made by means of _____. - Answers splices, joints, and free
ends of conductors
The temperature rating associated with the ampacity of a _____ shall be selected and coordinated so
as not to exceed the lowest temperature rating of any connected termination, conductor, or device. -
Answers conductor
For circuits rated 100A or less, when the equipment terminals are listed for use with 75°C conductors,
the _____ column of Table 310.16 shall be used to determine the ampacity of THHN conductors. -
Answers 75°C
CORRECTLY LATEST UPDATE 2026
The conductors and equipment required or permitted by this Code shall be acceptable only if _____. -
Answers approved
In judging equipment for approval, considerations such as _____ shall be evaluated - Answers
mechanical strength, wire-bending space, and arcing effects
Listed or labeled equipment shall be - Answers installed and used in accordance with any instructions
included in the listing or labeling.
Product testing, evaluation, and listing (product certification) shall be performed by _____. - Answers
recognized qualified electrical testing laboratories
Where electrical conductor material is not specified, the sizes given in the NEC shall apply to _____
conductors. - Answers copper
Conductor sizes are expressed in American Wire Gage (AWG) or in _____. - Answers circular mils
Wiring shall be installed so that the completed system will be free from _____, other than as required
or permitted elsewhere in the Code. - Answers short circuits, ground faults, and connections to the
earth
Only wiring methods recognized as _____ are included in this Code. - Answers suitable
Equipment intended to interrupt current at fault levels shall __________. - Answers have an
interrupting rating at nominal circuit voltage at least equal to the current that is available at the line
terminals of the equipment.
The ______, and other characteristics of the circuit to be protected shall be selected and coordinated
to permit the circuit protective devices used to clear a fault to do so without extensive damage to the
electrical equipment of the circuit. - Answers overcurrent protective devices, total impedance, and
equipment short-circuit current ratings
Unless identified for use in the operating environment, no conductors or equipment shall be _____
having a deteriorating effect on the conductors or equipment. - Answers located in damp or wet
locations, exposed to fumes, vapors, liquids, or gases, and exposed to excessive temperatures
Some cleaning and lubricating compounds can cause _____. - Answers severe deterioration of many
plastic materials used for insulating and structural applications in equipment.
Equipment not _____ for outdoor use or identified for indoor use such as "dry locations" or "indoor
use only", shall be protected against damage from the weather during construction. - Answers
identified
The NEC requires that electrical equipment be _____. - Answers installed in a neat and workmanlike
manner
Unused openings other than those intended for the operation of equipment, intended for mounting
purposes, or permitted as part of the design for listed equipment shall be _____. - Answers closed to
afford protection substantially equivalent to the wall of the equipment
Internal parts of electrical equipment, including busbars, wiring terminals, insulators, and other
surfaces, shall not be damaged or contaminated by foreign materials such as _____, or corrosive
residues. - Answers paint and plaster, cleaners, and/or abrasives
Cables and conductors installed exposed on the surfaces of ceilings and sidewalls shall be secured by
hardware including straps, staples, cable ties, hangers, or _____ fittings designed and installed so as
not to damage the cable. - Answers simila
Conductor terminal and splicing devices shall be _____ for the conductor material and they shall be
properly installed and used. - Answers identified
Connectors and terminals for conductors more finely stranded than Class B and Class C, as shown in
Table 10 of Chapter 9, shall be _____ for the specific conductor class or classes. - Answers Identified
Connection of conductors to terminal parts shall ensure a thoroughly good connection without
damaging the conductors and shall be made by means of _____. - Answers splices, joints, and free
ends of conductors
The temperature rating associated with the ampacity of a _____ shall be selected and coordinated so
as not to exceed the lowest temperature rating of any connected termination, conductor, or device. -
Answers conductor
For circuits rated 100A or less, when the equipment terminals are listed for use with 75°C conductors,
the _____ column of Table 310.16 shall be used to determine the ampacity of THHN conductors. -
Answers 75°C
