Free practice test · Oklahoma · 2023 NEC

Oklahoma journeyman electrician practice test

A free practice test for the Oklahoma unlimited electrical journeyman exam: 30 questions on the 2023 NEC, including the safety and business subjects, in the proportions of the official outline. No account needed. You get your score by subject and every answer explained.

How this test works

Part	Questions	Time at the exam's pace
Unlimited Electrical Journeyman	30	72 minutes

Questions are spread over every subject area of the Oklahoma Journeyman Electrician outline in proportion to the number of questions each area has on the exam. The time is the exam's own minutes per question applied to this test, and the real exam passes at 70 percent. Keep your 2023 NEC open, as you will on the exam.

For code lookup speed, try the NEC code practice test. For the format, timing and what to bring, read the Oklahoma Journeyman Electrician exam guide.

The test

Question 1A remodel has 42 receptacles at 0.4 labor-hour each and 18 switches at 0.3 labor-hour each. Labor costs $38.00 per hour. What is the labor cost? A. $843.60 B. $638.40 C. $912.00 D. $1,687.20

Question 2An Oklahoma city has adopted rules for electrical work under the Electrical License Act. Before a contractor's crew starts wiring a new building in that city, what is required? A. Only notice to the Construction Industries Board B. A permit must first be obtained from the city C. Nothing beyond holding a state license D. A permit from the state fire marshal

Question 3Write the trade size 1-1/4 as a decimal. A. 1.14 B. 1.4 C. 0.25 D. 1.25

Question 4A wire pull is measured at 8 ft 9 in. Write this length in decimal feet. A. 8.9 ft B. 8.09 ft C. 8.75 ft D. 105 ft

Question 5A spacer must not be more than 0.6 in thick. Four spacers are measured. Which one is over the limit? A. 5/8 in B. 0.595 in C. 19/32 in D. 0.58 in

Question 6A non-motor appliance marked 26 A operates as a continuous load on an individual branch circuit. The breaker and assembly are not listed for 100 percent loading. What is the minimum branch-circuit rating? A. 26.0 A B. 39.0 A C. 32.5 A D. 20.8 A

Question 7A 4,500-W, 240-V appliance (not continuous, not motor-operated) is on an individual branch circuit. The terminals are unmarked and the circuit is under 100 A. What is the minimum copper conductor size? A. 10 AWG B. 14 AWG C. 8 AWG D. 12 AWG

Question 8A non-motor appliance marked 26 A runs continuously. Its breaker and assembly are listed for continuous operation at 100 percent of rating. What is the minimum branch-circuit rating? A. 32.5 A B. 39.0 A C. 26.0 A D. 20.8 A

Question 9A motor-compressor is marked with a rated-load current of 18 A and a branch-circuit selection current of 22 A. What minimum ampacity must its branch-circuit conductors have? A. 22.5 A B. 22 A C. 50 A D. 27.5 A

Question 10A motor-compressor has RLA 30 A and BCSC 33 A. Copper THWN conductors, terminals rated 75°C. What is the minimum branch-circuit conductor size? A. 8 AWG B. 10 AWG C. 6 AWG D. 4 AWG

Question 11Branch-circuit conductors to a motor-compressor are 10 AWG copper with 60°C terminals (30 A). What is the largest value the greater of the compressor's RLA or BCSC can be? A. 37.5 A B. 30 A C. 24 A D. 28 A

Question 12A branch circuit supplies 24 A of continuous load and 12 A of noncontinuous load. The breaker is not listed for 100 percent operation. What is the minimum standard breaker rating? A. 45 A B. 40 A C. 30 A D. 60 A

Question 13A branch circuit supplies 38 A of continuous load and 4 A of noncontinuous load. The panelboard and breaker assembly is listed for operation at 100 percent of its rating; apply the 210.20(A) Exception. What is the minimum standard breaker rating? A. 60 A B. 40 A C. 70 A D. 45 A

Question 14A 100-A feeder would normally use 3 AWG copper, but 1/0 AWG copper is installed for voltage drop. What is the minimum size of the copper wire-type EGC? A. 4 AWG B. 8 AWG C. 6 AWG D. 1/0 AWG

Question 15A 200-A feeder would normally use 3/0 AWG copper; 250 kcmil copper is installed to reduce voltage drop. Under 250.122(B), what minimum circular-mil area must the copper EGC have? Round to the nearest 100 cmil. A. 26,240 cmil B. 17,600 cmil C. 108,400 cmil D. 39,100 cmil

Question 16A 240-V, single-phase, 40-A branch circuit supplies a 32-A load 400 ft away. 8 AWG copper would be enough for ampacity, but voltage drop is limited to 3 percent. Use CM = 2 × K × I × L ÷ VD with K = 12.9, then choose the smallest Table 8 size with at least that area for the ungrounded conductors. What is the minimum size of the copper EGC? A. 10 AWG B. 4 AWG C. 3 AWG D. 6 AWG

Question 171/0 AWG THHN copper conductors are installed in a 50°C ambient. What is their corrected ampacity, based on the 90°C rating? Round to 0.1 A. A. 112.5 A B. 123.0 A C. 139.4 A D. 207.3 A

Question 183 AWG THWN copper conductors run through a space where the ambient temperature is 104°F. What is their corrected ampacity? Round to 0.1 A. A. 82.0 A B. 91.0 A C. 88.0 A D. 100.0 A

Question 19Six 12 AWG equipment grounding conductors enter a box. Under 314.16(B)(5), what volume do the EGCs require? A. 2.25 in.³ B. 13.50 in.³ C. 5.63 in.³ D. 3.38 in.³

Question 20Two 14-2 cables with ground enter a ceiling box through cable connectors whose clamping mechanism is outside the box. The box has a luminaire stud. Inside, a 6-in. 14 AWG bare pigtail joins the two grounds to the box. What is the required volume? A. 14.00 in.³ B. 10.00 in.³ C. 12.00 in.³ D. 16.00 in.³

Question 21A pier feeder supplies 8 shore-power receptacles rated 50 A, 125/250 V. Applying the Table 220.120 demand factors, what is the demand load on each ungrounded conductor? A. 400 A B. 320 A C. 324 A D. 360 A

Question 22A 120/240-V marina feeder supplies 36 shore-power receptacles rated 30 A, 125 V, connected evenly between the two ungrounded conductors. Applying the Table 220.120 demand factors, what is the demand load on each ungrounded conductor? A. 324 A B. 648 A C. 378 A D. 540 A

Question 2324 shore-power pedestals each have one 50-A, 125/250-V receptacle and an individual kilowatt-hour submeter for the slip. Apply Table 220.120 and its Note 2. What is the final demand load on each ungrounded conductor of the 120/240-V feeder? A. 840 A B. 1,080 A C. 756 A D. 672 A

Question 24An EVSE is rated 24 A. What minimum branch-circuit conductor ampacity does 210.19(A)(1) require, before any correction or adjustment? A. 24 A B. 30 A C. 27.6 A D. 36 A

Question 25What is the minimum rating of the disconnecting means for a capacitor bank with a rated current of 48 A? A. 55.2 A B. 64.8 A C. 60.0 A D. 48.0 A

Question 26A 12-A capacitor connects to the terminals of a motor whose circuit conductors have an ampacity of 65 A. What is the minimum ampacity of the capacitor conductors? Round only the final answer, to 0.1 A. A. 21.7 A B. 16.2 A C. 65.0 A D. 87.8 A

Question 27A strip center has 6 tenant spaces, each with one customer entrance accessible to pedestrians. Each required sign outlet is on its own branch circuit. What sign load does 220.14(F) require in the calculation? A. 1,200 VA B. 7,200 VA C. 1,080 VA D. 9,000 VA

Question 28An electrical contractor has 8 employees on a project where an OSHA standard requires an emergency action plan. How may the plan be handled? A. It must be written and posted at the site entrance B. It may be communicated orally to the employees instead of being kept in writing C. It is not required because the crew has fewer than 10 employees D. It must be filed with the local fire department before work starts

Question 29A motor-compressor is marked RLA 32 A and LRA 160 A; no branch-circuit selection current is marked. What is the minimum ampere rating of its disconnecting means? A. 184.0 A B. 40.0 A C. 32.0 A D. 36.8 A

Question 30A condensing unit's compressor nameplate reads: RLA 15.6 A, BCSC 18 A, LRA 92 A. The unit's minimum circuit ampacity is marked 22.5 A. What is the minimum ampere rating of the compressor disconnect? Round only the final answer, to 0.1 A. A. 20.7 A B. 25.9 A C. 17.9 A D. 22.5 A

Suggested time: 72 minutes

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Last verified November 11, 2026.