NEC Journeyman Prep Exam Practice Questions
with Verified Correct Answers Latest Update 2025
1: What is the primary purpose of the National Electrical Code (NEC)?---
correct answer ---
The primary purpose of the NEC is to ensure the safe installation of
electrical wiring and equipment, thereby protecting people and property
from electrical hazards.
2: According to the NEC, what is the minimum depth for burying non-
metallic conduit in a residential yard?--- correct answer ---
The minimum depth for burying non-metallic conduit in a residential yard is
18 inches.
3: What is the NEC requirement for the maximum number of disconnects
allowed for a service entrance?--- correct answer ---
The NEC requires that no more than six disconnects are allowed for a
service entrance.
,4: In the NEC, what is the minimum clearance required between overhead
power lines and a residential swimming pool?--- correct answer ---
The minimum clearance required between overhead power lines and a
residential swimming pool is 22.5 feet.
5: How does the NEC define a wet location?--- correct answer ---
The NEC defines a wet location as an area subject to saturation with water
or other liquids, such as outdoor areas or locations near plumbing fixtures.
6: What is the maximum allowable voltage drop for branch circuits
according to the NEC?--- correct answer ---
The maximum allowable voltage drop for branch circuits according to the
NEC is 3%.
7: What is the NEC requirement for grounding electrical systems in a
commercial building?--- correct answer ---
The NEC requires that electrical systems in a commercial building be
grounded to prevent electrical shock and ensure system stability.
, 8: According to the NEC, what is the minimum ampacity for a service
entrance conductor in a single-family dwelling?--- correct answer ---
The minimum ampacity for a service entrance conductor in a single-family
dwelling is 100 amperes.
9: What is the NECs stance on using aluminum conductors in residential
wiring?--- correct answer --- The NEC permits the use of aluminum
conductors in residential wiring as long as they are properly rated and
installed to prevent issues such as corrosion or loosening.
10: How does the NEC classify a damp location?--- correct answer ---
The NEC classifies a damp location as an area that is subject to moderate
moisture, such as basements or areas under canopies.
11: What is the NEC requirement for the installation of ground-fault circuit
interrupters (GFCIs) in a bathroom?--- correct answer ---
The NEC requires that all receptacles in a bathroom be protected by ground-
fault circuit interrupters (GFCIs).
with Verified Correct Answers Latest Update 2025
1: What is the primary purpose of the National Electrical Code (NEC)?---
correct answer ---
The primary purpose of the NEC is to ensure the safe installation of
electrical wiring and equipment, thereby protecting people and property
from electrical hazards.
2: According to the NEC, what is the minimum depth for burying non-
metallic conduit in a residential yard?--- correct answer ---
The minimum depth for burying non-metallic conduit in a residential yard is
18 inches.
3: What is the NEC requirement for the maximum number of disconnects
allowed for a service entrance?--- correct answer ---
The NEC requires that no more than six disconnects are allowed for a
service entrance.
,4: In the NEC, what is the minimum clearance required between overhead
power lines and a residential swimming pool?--- correct answer ---
The minimum clearance required between overhead power lines and a
residential swimming pool is 22.5 feet.
5: How does the NEC define a wet location?--- correct answer ---
The NEC defines a wet location as an area subject to saturation with water
or other liquids, such as outdoor areas or locations near plumbing fixtures.
6: What is the maximum allowable voltage drop for branch circuits
according to the NEC?--- correct answer ---
The maximum allowable voltage drop for branch circuits according to the
NEC is 3%.
7: What is the NEC requirement for grounding electrical systems in a
commercial building?--- correct answer ---
The NEC requires that electrical systems in a commercial building be
grounded to prevent electrical shock and ensure system stability.
, 8: According to the NEC, what is the minimum ampacity for a service
entrance conductor in a single-family dwelling?--- correct answer ---
The minimum ampacity for a service entrance conductor in a single-family
dwelling is 100 amperes.
9: What is the NECs stance on using aluminum conductors in residential
wiring?--- correct answer --- The NEC permits the use of aluminum
conductors in residential wiring as long as they are properly rated and
installed to prevent issues such as corrosion or loosening.
10: How does the NEC classify a damp location?--- correct answer ---
The NEC classifies a damp location as an area that is subject to moderate
moisture, such as basements or areas under canopies.
11: What is the NEC requirement for the installation of ground-fault circuit
interrupters (GFCIs) in a bathroom?--- correct answer ---
The NEC requires that all receptacles in a bathroom be protected by ground-
fault circuit interrupters (GFCIs).
