Free practice test · South Dakota · 2023 NEC

South Dakota journeyman electrician practice test

A free practice test for the South Dakota journeyman electrician exam (ICC 531): 30 questions on the 2023 NEC, 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
531 South Dakota Journeyman Electrician	30	90 minutes

Questions are spread over every subject area of the South Dakota 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 South Dakota Journeyman Electrician exam guide.

The test

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

Question 2A 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 3A service has 600 kcmil aluminum ungrounded conductors in one raceway. What is the minimum size of an aluminum main bonding jumper? A. 3/0 AWG B. 1/0 AWG C. 4/0 AWG D. 2/0 AWG

Question 4A service has 4 parallel sets of 600 kcmil copper conductors. What is the minimum size of a copper supply-side bonding jumper installed as a single jumper for all sets? A. 3/0 AWG B. 2/0 AWG C. 250 kcmil D. 300 kcmil

Question 5A service has 3 parallel sets of 500 kcmil copper conductors. A single copper supply-side bonding jumper bonds all the raceways. What is its minimum size? A. 3/0 AWG B. 4/0 AWG C. 250 kcmil D. 2/0 AWG

Question 6A feeder supplies a 150-A continuous load only. Copper THWN conductors, 75°C terminals, no correction or adjustment factors. What is the minimum conductor size? A. 1/0 AWG B. 3/0 AWG C. 4/0 AWG D. 2/0 AWG

Question 7A 480-V, 3-phase feeder supplies 100 kVA of continuous load and 30 kVA of noncontinuous load, both balanced. Use 1.732 for √3. What minimum ampacity must the feeder have? Round to 0.1 A. A. 186.4 A B. 156.4 A C. 195.5 A D. 322.9 A

Question 8A branch circuit supplies a 46-A continuous load. THHN copper conductors; the terminals are not marked and the circuit is 100 A or less. No correction or adjustment factors apply. What is the minimum conductor size? A. 6 AWG B. 4 AWG C. 8 AWG D. 3 AWG

Question 9A branch circuit uses 12 AWG copper with 60°C terminals (20 A). No correction or adjustment applies. What is the largest continuous load it may carry under 210.19(A)(1)? A. 20 A B. 16 A C. 25 A D. 12.8 A

Question 10A branch circuit supplies 64 A of continuous and 10 A of noncontinuous load. Copper THWN, terminals rated 75°C, no correction or adjustment. What is the minimum conductor size? A. 4 AWG B. 2 AWG C. 3 AWG D. 6 AWG

Question 11Apply Table 220.55 Note 4. What is the branch-circuit load for one 12-kW household range? A. 12 kW B. 8 kW C. 9.6 kW D. 11 kW

Question 12A 7-kW counter-mounted cooktop and two 4-kW wall ovens in the same kitchen are supplied by one branch circuit. Applying Table 220.55 Note 6 (with Note 1), what is the branch-circuit load? A. 9.2 kW B. 15.0 kW C. 8.0 kW D. 14.0 kW

Question 13A box with no clamps and no grounding conductors has six 14 AWG conductors entering it and two single-pole switches, each on its own yoke. What is the required volume? A. 16.00 in.³ B. 22.50 in.³ C. 20.00 in.³ D. 12.00 in.³

Question 14Six 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 15Two 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 16What volume allowance does Table 314.16(B)(1) require for each 12 AWG conductor? A. 2.00 in.³ B. 2.50 in.³ C. 2.25 in.³ D. 1.75 in.³

Question 17What volume allowance does Table 314.16(B)(1) require for each 6 AWG conductor? A. 5.00 in.³ B. 3.00 in.³ C. 2.50 in.³ D. 81.9 in.³

Question 18Six 14 AWG conductors enter a box and are spliced together. What volume do the conductors require (conductors only)? A. 13.50 in.³ B. 10.50 in.³ C. 6.00 in.³ D. 12.00 in.³

Question 19A junction box has four 12 AWG conductors and two 14 AWG conductors entering it, all spliced inside. There are no clamps, devices or grounds. What is the total conductor volume? A. 13.50 in.³ B. 13.00 in.³ C. 12.00 in.³ D. 9.00 in.³

Question 20A 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 21A 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 22Branch-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 23A hermetic motor-compressor has a rated-load current of 18 A and no branch-circuit selection current marked. Applying 440.22(A) with no exceptions, what is the largest standard short-circuit and ground-fault protective device permitted? A. 30 A B. 35 A C. 25 A D. 40 A

Question 24A 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 25A 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

Question 26The conductors from a 260-A (nameplate) generator to its first distribution panel have no overcurrent protection at the generator end. What minimum ampacity does 445.13(A) require? A. 325.0 A B. 226.1 A C. 260.0 A D. 299.0 A

Question 27A 200-A (nameplate) generator has no overcurrent protection at its terminals, and its design and operation prevent overloading. Apply the 445.13(A) Exception for such generators. What is the minimum ampacity of the conductors to the first overcurrent device? A. 200.0 A B. 230.0 A C. 250.0 A D. 173.9 A

Question 28An 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 29An EVSE is rated 10 kW at 240 V, single-phase. What is the minimum standard overcurrent device rating for its branch circuit? A. 60 A B. 45 A C. 70 A D. 110 A

Question 30An EVSE can deliver up to 48 A, but its current setting is adjusted to 30 A with restricted access, as 625.42(B) permits. What is the minimum standard overcurrent device rating for its branch circuit? A. 60 A B. 40 A C. 30 A D. 50 A

Suggested time: 90 minutes

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Last verified November 11, 2026.