Oklahoma Journeyman Electrician Exam
Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
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1. What is the primary purpose of the National Electrical Code
(NEC)?
A. To reduce installation costs
B. To provide practical safeguarding of persons and property from
electrical hazards
C. To establish labor requirements
D. To regulate utility rates
Rationale: The NEC is intended to provide practical safeguards for
people and property from hazards arising from the use of electricity.
While following the NEC often improves reliability, its primary purpose
is electrical safety rather than economics or labor regulation.
, 2. Which NEC chapter generally contains requirements for wiring
methods and materials?
A. Chapter 1
B. Chapter 2
C. Chapter 3
D. Chapter 8
Rationale: Chapter 3 covers wiring methods and materials, including
raceways, cables, boxes, fittings, and conductors. Understanding
chapter organization helps electricians locate requirements quickly
during installations and examinations.
3. What is the minimum working space depth required in front of
electrical equipment operating at 0–150 volts to ground under
Condition 1?
A. 24 inches
B. 36 inches
C. 42 inches
D. 48 inches
,Rationale: NEC 110.26 requires at least 36 inches of clear working
space for equipment under Condition 1. Maintaining adequate
clearance allows safe servicing and reduces the risk of accidental
contact with energized parts.
4. Conductors intended to carry current continuously should
generally be loaded to no more than what percentage of their
ampacity?
A. 70%
B. 75%
C. 80%
D. 100%
Rationale: Continuous loads are generally calculated at 125% of the
load, meaning conductors should not normally carry more than 80% of
their ampacity. This prevents overheating during prolonged operation.
5. Which color insulation is commonly used to identify grounded
conductors?
A. Red
, B. Green
C. White
D. Orange
Rationale: White or gray insulation identifies grounded (neutral)
conductors. Proper identification reduces installation errors and
improves electrical safety.
6. Which conductor color is reserved for equipment grounding
conductors?
A. Black
B. White
C. Blue
D. Green
Rationale: Green or bare conductors identify equipment grounding
conductors. They provide a low-impedance fault path that facilitates
operation of overcurrent protective devices.
7. EMT is classified as which type of raceway?
Questions and Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of the National Electrical Code
(NEC)?
A. To reduce installation costs
B. To provide practical safeguarding of persons and property from
electrical hazards
C. To establish labor requirements
D. To regulate utility rates
Rationale: The NEC is intended to provide practical safeguards for
people and property from hazards arising from the use of electricity.
While following the NEC often improves reliability, its primary purpose
is electrical safety rather than economics or labor regulation.
, 2. Which NEC chapter generally contains requirements for wiring
methods and materials?
A. Chapter 1
B. Chapter 2
C. Chapter 3
D. Chapter 8
Rationale: Chapter 3 covers wiring methods and materials, including
raceways, cables, boxes, fittings, and conductors. Understanding
chapter organization helps electricians locate requirements quickly
during installations and examinations.
3. What is the minimum working space depth required in front of
electrical equipment operating at 0–150 volts to ground under
Condition 1?
A. 24 inches
B. 36 inches
C. 42 inches
D. 48 inches
,Rationale: NEC 110.26 requires at least 36 inches of clear working
space for equipment under Condition 1. Maintaining adequate
clearance allows safe servicing and reduces the risk of accidental
contact with energized parts.
4. Conductors intended to carry current continuously should
generally be loaded to no more than what percentage of their
ampacity?
A. 70%
B. 75%
C. 80%
D. 100%
Rationale: Continuous loads are generally calculated at 125% of the
load, meaning conductors should not normally carry more than 80% of
their ampacity. This prevents overheating during prolonged operation.
5. Which color insulation is commonly used to identify grounded
conductors?
A. Red
, B. Green
C. White
D. Orange
Rationale: White or gray insulation identifies grounded (neutral)
conductors. Proper identification reduces installation errors and
improves electrical safety.
6. Which conductor color is reserved for equipment grounding
conductors?
A. Black
B. White
C. Blue
D. Green
Rationale: Green or bare conductors identify equipment grounding
conductors. They provide a low-impedance fault path that facilitates
operation of overcurrent protective devices.
7. EMT is classified as which type of raceway?
