STC-EIT260 Exam Questions with Verified Answers Latest Update 2025
What is the NEC definition of a qualified person? - Answers One who has skills and knowledge related to
the construction and operation of the electrical equipment and installations and has received safety
training to recognize and avoid the hazards involved. NEC 100 Def.
An arc flash can produce temperatures of ____°F. - Answers 35,000
Listing or labeling of electrical equipment is done by a ____. - Answers recognized testing laboratory
____________________ provide additional information about a job that may not be found on the
blueprints. - Answers Specifications
The authority having jurisdiction over electrical construction is generally the ____________________. -
Answers electrical inspector
The use of the word shall indicates a(n) ____________________ rule. - Answers Mandatory NEC 90.5(A)
Match the following switch types with their drawing symbols "S3" - Answers Three-way
Receptacles are not permitted to be mounted directly over ____________________ heaters in
residential construction. - Answers Baseboard NEC 210.52 Informational Note
Match the following switch types with their drawing symbols "S" - Answers Single-pole
Lighting outlet boxes are designed for size ____________________ screws. - Answers 8-32
In order that the connections inside an outlet box remain accessible, the NEC requires that a surface
extension from an outlet box cover be made using ____. - Answers flexible conduit NEC 314.22
Where noncombustible surface material is used on walls or ceilings, outlet boxes must be mounted so
that they will be set back not more than ____ from the face of the surface material. - Answers 1/4 in.
NEC 314.20
Unused knockouts in boxes, spaces for ____________________ in a panel, meter socket enclosures, and
all other similar equipment must be effectively closed. - Answers circuit breakers NEC 110.12(A) & 408.7
Explain what is meant by a nominal voltage rating - Answers Nominal means typical or in name only.
Circuits are rated at a nominal 120 volts. However, the actual operating voltage may be 110V, 115V, or
117V. NEC 100 Def.
A continuous load shall not exceed ____ of the rating of the branch circuit - Answers 80%
All of the following are included when calculating the usable area of a dwelling to compute the required
lighting load, except for ____. - Answers crawl space NEC 220.12
How is track lighting load in residences calculated? - Answers It is considered to be part of the general
lighting load of 3 volt-amperes per square foot. NEC 220.43(B)
What is the NEC definition of a qualified person? - Answers One who has skills and knowledge related to
the construction and operation of the electrical equipment and installations and has received safety
training to recognize and avoid the hazards involved. NEC 100 Def.
An arc flash can produce temperatures of ____°F. - Answers 35,000
Listing or labeling of electrical equipment is done by a ____. - Answers recognized testing laboratory
____________________ provide additional information about a job that may not be found on the
blueprints. - Answers Specifications
The authority having jurisdiction over electrical construction is generally the ____________________. -
Answers electrical inspector
The use of the word shall indicates a(n) ____________________ rule. - Answers Mandatory NEC 90.5(A)
Match the following switch types with their drawing symbols "S3" - Answers Three-way
Receptacles are not permitted to be mounted directly over ____________________ heaters in
residential construction. - Answers Baseboard NEC 210.52 Informational Note
Match the following switch types with their drawing symbols "S" - Answers Single-pole
Lighting outlet boxes are designed for size ____________________ screws. - Answers 8-32
In order that the connections inside an outlet box remain accessible, the NEC requires that a surface
extension from an outlet box cover be made using ____. - Answers flexible conduit NEC 314.22
Where noncombustible surface material is used on walls or ceilings, outlet boxes must be mounted so
that they will be set back not more than ____ from the face of the surface material. - Answers 1/4 in.
NEC 314.20
Unused knockouts in boxes, spaces for ____________________ in a panel, meter socket enclosures, and
all other similar equipment must be effectively closed. - Answers circuit breakers NEC 110.12(A) & 408.7
Explain what is meant by a nominal voltage rating - Answers Nominal means typical or in name only.
Circuits are rated at a nominal 120 volts. However, the actual operating voltage may be 110V, 115V, or
117V. NEC 100 Def.
A continuous load shall not exceed ____ of the rating of the branch circuit - Answers 80%
All of the following are included when calculating the usable area of a dwelling to compute the required
lighting load, except for ____. - Answers crawl space NEC 220.12
How is track lighting load in residences calculated? - Answers It is considered to be part of the general
lighting load of 3 volt-amperes per square foot. NEC 220.43(B)
