South Dakota Electrical Contractor Exam (ICC 530, 2023 NEC) Practice Exam
Free Practice Exam
Test your knowledge with 10 questions from our pool of 20 free questions.
- 10 questions per attempt
- 30 minute time limit
- Unlimited attempts
- A new mix each time
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Full Practice Exam
Complete exam simulation matching the real Pearson VUE test format.
- 100 questions (same as real exam)
- 300 minute time limit
- 9 topic areas covered
- 460 questions in pool
- Detailed explanations
Texts preferred · 9am–9pm Central
South Dakota Electrical Contractor (ICC 530, 2023 NEC) Practice Exam Guide
What's on the exam
Questions per topic, out of 100This practice exam follows the official content outline for the South Dakota Electrical Contractor (ICC 530, 2023 NEC) exam: General Knowledge and Plan Reading, Services and Service Equipment, Feeders, Branch Circuits and Conductors, Wiring Methods and Materials, Equipment and Devices, Control Devices, Motors and Generators, Special Occupancies, Equipment and Conditions.
- Free practice exam: 10 questions per attempt, retake as often as you like.
- Full practice exam: 100 questions on a 5 hours clock, a new draw from our bank every attempt.
General Knowledge and Plan Reading 12 items
Our study plan for this topic: Electrical Theory and General Electrical Load Calculations; Code Definitions and Terms; Plan Reading; AC circuit concepts: impedance, reactance, inductance, and capacitance calculations; Power factor, apparent power (kVA), and power factor correction; Kirchhoff's Current and Voltage Laws; Common electrical distribution systems and conductor color coding; NEC scope, arrangement, and enforcement (Article 90).
Services and Service Equipment 16 items
The outline lists: Services and Fault Current; Service Load Calculations; Service Equipment & Service Conductors; Transformers; System Grounding and Bonding; Temporary Service Wiring; Overhead and underground service conductor requirements and clearances; Service disconnecting means requirements and ratings.
Feeders 4 items
Our study plan for this topic: Load Calculations; Equipment Grounding; Minimum feeder conductor ampacity and sizing (Article 215.2); Feeder overcurrent protection requirements (Article 215.3); Ground-fault protection of equipment for feeders (Article 215.10); Feeder conductor identification — grounded, ungrounded, and EGC (Article 215.12); Surge-protective device requirements for feeders (Articles 215.18 and 225.42); Outside feeder disconnecting means — location, rating, and number (Article 225.31–225.39).
Branch Circuits and Conductors 16 items
Our study plan for this topic: Branch Circuit Calculation; Overcurrent Protection; Conductors; Required Outlets & GFCI/AFCI Protection; Equipment Grounding; Voltage Drop Calculations (Single-Phase and Three-Phase); Ampacity Correction and Adjustment Factors (Temperature and Conductor Count); Conductor Insulation Types, Temperature Ratings, and Permitted Uses.
Wiring Methods and Materials 19 items
The outline lists: Raceway Installations; Underground Wiring Methods; Boxes and Enclosures; Cabinets, Panelboards, & Switchboards; Clearance and Guarding; Flexible Cords and Cables; Cable Wiring Methods (NM, MC, AC, MI, SE, UF, TC, ITC, FC, FCC, IGS, Type P); Conductor Fill and Conduit Sizing Calculations.
Equipment and Devices 10 items
Our study plan for this topic: Luminaires; Receptacles, Switches and Other Devices; Appliances and Other Equipment; Other Utilization Equipment; Heating and Cooling Equipment; Fixture Wire Types, Ampacities, and Minimum Size Requirements; Luminaire Installation in Specific Locations (wet, damp, closets, bathtub/shower zones); Recessed Luminaire Clearances, Thermal Protection, and Type IC Requirements.
Control Devices 3 items
Our study plan for this topic: Switches, Disconnects and Controllers; Motor Controller Ratings and Markings; Motor Control Circuit Overcurrent Protection and Wiring; Motor Disconnecting Means Requirements; Motor Overload Protection Devices and Settings; Motor Control Centers Installation and Overcurrent Protection; Stop-Start and Jogging Control Circuit Configurations; Industrial Control Panel Requirements and Markings.
Motors and Generators 8 items
Our study plan for this topic: Motors; Generators; Motor branch-circuit conductor sizing and ampacity; Motor overload protection requirements and ratings; Motor branch-circuit short-circuit and ground-fault protective device ratings; Motor disconnecting means requirements and ratings; Motor controllers: ratings, types, and marking requirements; Motor control circuits and motor control centers.
Special Occupancies, Equipment and Conditions 12 items
The outline lists: Special Occupancies; Swimming Pools and Similar Installations; Mobile Home and RV Parks; Data Processing Equipment; Miscellaneous Special Equipment; Emergency Systems; Signaling and Fire Alarm Systems; Hazardous Location Classification (Classes, Divisions, and Zones).
Sample 1 — Wiring Methods and Materials
Question: A 480V switchboard has exposed live parts front and rear. What is minimum working clearance required?
- A. 3 ft
- B. 4 ft
- C. 5 ft
- D. 6 ft
Correct Answer: B
Exposed live parts on both sides = Condition 3; Table 110.26(A)(1), 151–600V → 4 ft.
Reference: NEC 2023 Table 110.26(A)(1)
Sample 2 — Services and Service Equipment
Question: When calculating lighting loads for a retail occupancy, what is the minimum unit load in volt-amperes per square foot that must be used?
- A. 2.2 volt-amperes per square foot
- B. 1.5 volt-amperes per square foot
- C. 1.3 volt-amperes per square foot
- D. 1.9 volt-amperes per square foot
Correct Answer: D
Per NEC Table 220.42(A), the general lighting load for a retail occupancy is 20 VA/m² or 1.9 volt-amperes per square foot. This value is used to calculate the minimum lighting load for the branch circuits, feeders, and services.
Reference: NEC 2023 Table 220.42(A)
Sample 3 — Branch Circuits and Conductors
Question: What is the minimum copper service-entrance conductor size for a 200 A, 120/240-volt, single-phase service to a one-family dwelling, using THHN conductors with 75°C terminals?
- A. 2/0 AWG
- B. 3/0 AWG
- C. 250 kcmil
- D. 300 kcmil
Correct Answer: A
For a 120/240-volt, single-phase service supplying the entire load of a one-family dwelling, 310.12(A) (310.15(B)(7) in NEC 2017) permits service conductors with an ampacity of not less than 83 percent of the service rating: 200 A x 0.83 = 166 A. In the 75°C column of Table 310.16, 2/0 AWG copper is rated 175 A, so 2/0 AWG is the minimum. Without that dwelling allowance, 3/0 AWG copper (rated 200 A) would be required.
Reference: NEC 2023 Section 310.12(A), Table 310.16
- Your results break the score down by outline topic.
- The real exam's passing score: a minimum score of 70.
- Keep practicing until you pass consistently, not just once.
- Answer what you know first and bookmark the rest. Our practice exams let you bookmark and come back.
- Work your bookmarks on the second pass.
- Real exam pace: about 3 minutes per question.
- After each attempt, look up every miss in your book.
| Questions | 100 questions |
| Time limit | 5 hours |
| Passing score | a minimum score of 70 |
| Books in the exam room | Open book |
| Exam fee | $115 |
- Results for exams taken electronically are available immediately after you finish the exam.
- A failed exam may be retaken after 30 days, and after a second failure there is a 90-day wait before each later attempt.
Source: South Dakota Contractor/Trades Examination Information Bulletin, PUBLISHED August 19, 2025. Check the bulletin before test day: fees and rules can change.