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According to the NEC Article 100, what is the definition of 'accessible' as applied to equipment?

A
B
C
D
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Free Journeyman Electrician Practice Test by State 2026: 3,700+ NEC Questions24 min read
2026 Statistics

Key Facts: OK Electrician Exam

70%

Passing Score

OK CIB

80

Exam Questions

PSI

3.5 hrs

Time Limit

PSI

$75-$100

Exam Fee

PSI

The OK Journeyman Electrician exam requires 70% to pass across 80 multiple-choice questions in 3.5 hours (210 minutes). It is open-book, allowing a bound copy of the 2023 NEC. The exam fee is $75-$100. The CIB oversees all electrical licensing in Oklahoma and enforces NEC compliance statewide.

Sample OK Electrician Practice Questions

Try these sample questions to test your OK Electrician exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1According to the NEC Article 100, what is the definition of 'accessible' as applied to equipment?
A.Equipment that can be reached without climbing over obstacles
B.Admitting close approach; not guarded by locked doors, elevation, or other effective means
C.Equipment located within arm's reach
D.Equipment visible from the floor level
Explanation: Per NEC Article 100, 'accessible' as applied to equipment means admitting close approach; not guarded by locked doors, elevation, or other effective means. This is distinct from 'readily accessible,' which adds the requirement that it can be reached quickly without climbing or removing obstacles.
2In Oklahoma, the Construction Industries Board (CIB) oversees electrician licensing. What is the NEC edition currently adopted by Oklahoma?
A.NEC 2017
B.NEC 2020
C.NEC 2023
D.NEC 2026
Explanation: Oklahoma has adopted the 2023 National Electrical Code through the Construction Industries Board (CIB). The CIB regulates electrical licensing and ensures that all electrical work in the state complies with the current NEC edition.
3Per NEC 210.8(A), GFCI protection is required in dwelling unit bathrooms for receptacles rated at what voltage range?
A.120-volt, 15- and 20-ampere only
B.125-volt through 250-volt
C.All voltages and amperages
D.120/240-volt circuits only
Explanation: Per NEC 210.8(A) in the 2023 edition, GFCI protection is required for 125-volt through 250-volt receptacles in dwelling unit bathrooms. The 2023 NEC expanded the GFCI voltage range beyond the previous 125-volt, 15/20-ampere limitation.
4What is the minimum size equipment grounding conductor required for a 40-ampere circuit per NEC Table 250.122?
A.14 AWG copper
B.12 AWG copper
C.10 AWG copper
D.8 AWG copper
Explanation: Per NEC Table 250.122, a 40-ampere overcurrent device requires a minimum 10 AWG copper equipment grounding conductor. The equipment grounding conductor size is based on the rating of the overcurrent device, not the conductor ampacity.
5Per NEC 250.66, what is the minimum size grounding electrode conductor for a service with 1/0 AWG copper service-entrance conductors?
A.8 AWG copper
B.6 AWG copper
C.4 AWG copper
D.2 AWG copper
Explanation: Per NEC Table 250.66, for copper service-entrance conductors sized 1 AWG or 1/0 AWG, the minimum grounding electrode conductor is 6 AWG copper. This table correlates service conductor size with the required grounding electrode conductor.
6Per NEC Table 310.16, what is the ampacity of a 2 AWG copper conductor with THWN insulation at 75°C?
A.100 amperes
B.115 amperes
C.130 amperes
D.145 amperes
Explanation: Per NEC Table 310.16, a 2 AWG copper conductor at the 75°C column has an ampacity of 115 amperes. This is an important value for sizing feeders and subpanels in residential and commercial applications.
7According to NEC 314.16(B), what is the volume allowance for each 14 AWG conductor in a box fill calculation?
A.1.75 cubic inches
B.2.00 cubic inches
C.2.25 cubic inches
D.2.50 cubic inches
Explanation: Per NEC Table 314.16(B), each 14 AWG conductor requires a volume allowance of 2.00 cubic inches in a box fill calculation. Device yokes count as two conductors, clamps as one conductor, and all EGCs together as one conductor of the largest size present.
8Per NEC 430.52, what is the maximum size non-time-delay fuse permitted for motor branch-circuit short-circuit and ground-fault protection for a standard AC motor?
A.150% of motor FLC
B.175% of motor FLC
C.250% of motor FLC
D.300% of motor FLC
Explanation: Per NEC Table 430.52, the maximum rating for a non-time-delay fuse used for motor branch-circuit short-circuit and ground-fault protection is 300% of the motor full-load current. However, the preferred maximum is 250% when that size corresponds to a standard fuse rating.
9What is the minimum height above grade for service drop conductors that pass over a residential driveway per NEC 230.24(B)?
A.10 feet
B.12 feet
C.15 feet
D.18 feet
Explanation: Per NEC 230.24(B)(1), service drop conductors must maintain a minimum clearance of 12 feet above residential driveways and commercial areas not subject to truck traffic. This ensures safe vehicle passage beneath the conductors.
10Oklahoma's climate includes severe weather. Per NEC 225.18, what is the minimum clearance for overhead branch-circuit conductors over a public street?
A.10 feet
B.12 feet
C.15 feet
D.18 feet
Explanation: Per NEC 225.18(1), overhead branch-circuit and feeder conductors must maintain a minimum clearance of 18 feet above public streets, alleys, roads, and driveways on other than residential property subject to truck traffic.

About the OK Electrician Exam

The Oklahoma Journeyman Electrician exam is administered by PSI for the Oklahoma Construction Industries Board (CIB). Based on the 2023 NEC, the exam covers electrical theory, code compliance, grounding and bonding, wiring methods, load calculations, motors, transformers, and special occupancies. Oklahoma requires documented apprenticeship and experience hours.

Questions

80 scored questions

Time Limit

3.5 hours

Passing Score

70%

Exam Fee

$75-$100 (OK Construction Industries Board (CIB) / PSI)

OK Electrician Exam Content Outline

20%

NEC General & Theory

Definitions, electrical theory, NEC navigation, working space requirements, and installation fundamentals

20%

Branch Circuits & Overcurrent Protection

Circuit sizing, receptacle spacing, GFCI/AFCI requirements, overcurrent protection, and lighting outlets

15%

Grounding & Bonding

Grounding electrode systems, equipment grounding, bonding requirements, and ground-fault protection

20%

Wiring Methods & Materials

Conductor ampacity, conduit fill, cable assemblies, box fill calculations, and raceway types

25%

Services, Feeders, Motors & Special Occupancies

Service entrance requirements, load calculations, motor circuits, transformers, hazardous locations, and healthcare facilities

How to Pass the OK Electrician Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 80 questions
  • Time limit: 3.5 hours
  • Exam fee: $75-$100

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

OK Electrician Study Tips from Top Performers

1Master NEC Article 250 (Grounding and Bonding) — this is the most heavily tested topic on every state exam
2Practice dwelling unit load calculations using NEC Article 220 until you can complete them efficiently
3Learn to navigate the NEC index quickly — the 3.5-hour time limit means fast code lookups are essential
4Focus on conductor ampacity from Table 310.16 and temperature correction/adjustment factors
5Study motor circuit requirements in Article 430 and HVAC compressor rules in Article 440

Frequently Asked Questions

What NEC edition does Oklahoma use for the electrician exam?

Oklahoma has adopted the 2023 NEC through the Construction Industries Board (CIB). The PSI-administered exam is open-book, allowing a bound copy of the 2023 NEC. No loose pages, handwritten notes, or removable tabs are permitted.

How long is the Oklahoma electrician exam?

The Oklahoma journeyman electrician exam allows 3.5 hours (210 minutes) for 80 multiple-choice questions. This gives approximately 2.6 minutes per question, making efficient NEC navigation skills essential.

How hard is the Oklahoma electrician exam?

The exam is challenging with an estimated 55% first-time pass rate. Strong NEC navigation skills, load calculation practice, and familiarity with grounding and bonding requirements are critical for passing.

What does the Oklahoma electrician exam cost?

The exam fee is approximately $75-$100 through PSI. Additional costs include your NEC codebook ($100+) and any study materials. You must apply through the CIB before scheduling with PSI.