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Nevada C-2 Electrical Contractor Practice Exam

✓ 800 Questions & Answers - Instant PDF Download

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You can wire a commercial panel in your sleep and still lose points on the Nevada C-2 exam. The test punishes slow code lookups, skipped calculation steps, and answer choices written to look right. Four hours sounds generous until question 52 asks for a load calculation you haven’t practiced since your apprenticeship.

This Nevada C-2 Electrical Contractor Exam Practice Test gives you 800 exam-style questions with correct answers and full explanations. Work through them, learn why each wrong option fails, and walk into the PSI testing center knowing where your weak spots were and how you fixed them.

What Is Included in the Nevada C-2 Electrical Contractor Exam Practice Test?

You get 800 multiple-choice questions with four options each, a verified correct answer, and a clear explanation for every item. The set covers the calculations, code decisions, and troubleshooting scenarios that make up the C-2 trade exam.

800 practice questions and answers, updated for 2026
Detailed answer explanations that show the reasoning, not just the letter
Load, voltage, current, power, and three-phase calculation problems
NEC-based scenarios covering grounding, bonding, conductors, and overcurrent protection
Troubleshooting and job-site safety situations
Instant download, lifetime access, and free lifetime updates

One purchase covers everything, with no subscription and no recurring fees.

Why Do Candidates Struggle on the Nevada C-2 Electrical Exam?

Most candidates don’t fail from a lack of field experience. They fail because the exam asks them to apply code under time pressure, and field work rarely trains that.

Spending too long hunting through the NEC book for one answer
Missing a unit, a demand factor, or a 125 percent multiplier in a calculation
Choosing the answer that sounds familiar instead of the one the code supports
Studying only favorite topics and skipping motors, low voltage, or transmission lines
Memorizing answer letters instead of understanding the rule behind them

Every one of these problems gets fixed by practice with feedback, which is exactly how this question bank is built.

How Does This Practice Test Help You Pass the Nevada C-2 Exam?

It trains the same skills the real exam tests: reading carefully, calculating accurately, and tying each answer to a code rule. Each explanation tells you why the right answer works and why the tempting wrong ones don’t.

Reveals weak subjects early so you can focus your study hours
Builds calculation speed with repeated, realistic problem types
Teaches you to spot distractors, such as answers that skip a step or apply the wrong table
Strengthens code navigation so open-book time works for you
Gives you a realistic benchmark before you schedule your test date

Treat every missed question as a map of what to review next.

What Topics Are Covered on the Nevada C-2 Exam?

The questions follow the main subject areas in the PSI content outline for the C-2 electrical classification. That way your study time matches what the exam actually draws from.

General electrical knowledge, theory, and terminology
Services, feeders, and branch circuits
Grounding and bonding
Conductors, cables, and ampacity
Raceways, boxes, and conduit fill
Special occupancies and special equipment
Electrical power, motors, and motor circuits
Low voltage, lighting, illuminated signs, and fire detection systems
Safety information and transmission lines
Overcurrent protection and protective devices

Always compare your study plan against the latest PSI bulletin, since outlines and weighting can change.

Nevada C-2 Exam Format: Number of Questions, Passing Score, and Time Limit

According to the current PSI bulletin, the C-2 trade exam has 80 questions, requires 56 correct answers to pass, and allows four hours. The exam is open-book, but only approved reference materials are allowed.

80 multiple-choice questions
Minimum passing score of 56 correct answers
Four hours to complete the exam
Open-book format with restrictions on permitted references
Administered through PSI for the Nevada State Contractors Board

Confirm the details in the current candidate bulletin before your appointment, because the Board and PSI set the final rules.

Who Should Use This Nevada Electrical Contractor Practice Test?

It’s built for anyone preparing for the Nevada C-2 trade exam, whether you’re taking it for the first time or returning to licensing study after years in the field.

Journeyman electricians moving up to a contractor license
Qualifying individuals approved by the Nevada State Contractors Board to test
Electricians who are strong in the field but rusty on code and calculations
Candidates who failed once and need targeted practice before a retake
Contractors from other states seeking a Nevada electrical license

If you want more than a plain question list, this resource gives you the reasoning along with the answer.

What Makes These Nevada C-2 Practice Questions Different?

The questions read like real scenarios, not trivia. Each one asks you to make a decision a licensed electrical contractor would actually face, then explains the logic behind the correct choice.

Scenario-based questions drawn from commercial and residential work
Step-by-step calculation explanations you can redo on your own
Wrong answer options that reflect common mistakes, so you learn to recognize them
Safety-first reasoning that matches sound electrical practice
A built-in reminder to verify rules against your adopted NEC edition and approved references

Used consistently, that format turns practice sessions into real exam readiness.

How to Study for the Nevada C-2 Electrical Exam

A steady routine beats a last-minute cram. Study one topic at a time, then mix subjects so you practice switching between them the way the real exam makes you.

Start with a timed set to find your baseline
Redo every missed calculation without peeking at the explanation
Tab and practice with your permitted code book so lookups become automatic
Review weak subjects at least twice before moving on
Take a full-length timed session in the final week

Each practice session should end with a short list of topics to revisit, not just a score.

Nevada Electrical Contractor License Requirements: Where the Trade Exam Fits

Passing the C-2 trade exam is one step in the licensing process, not the whole thing. The Nevada State Contractors Board reviews your application and experience before approving you to test.

Submit the license application with verified experience
Complete background check and fingerprint requirements
Wait for the Board’s examination eligibility approval
Confirm whether you also need the business and law exam or qualify for a waiver
Meet financial responsibility and other licensing conditions

Check the Board’s current requirements directly, since application rules and fees can change.

Why Choose a Paid Nevada C-2 Practice Test Over Free Questions?

Free quizzes tend to be short, outdated, or missing explanations. A full question bank gives you depth, variety, and the reasoning you need to pass on the first attempt.

800 questions instead of a handful of random samples
Consistent explanations written to teach, not just confirm
Coverage across all major C-2 subject areas
Free lifetime updates as content is refreshed
A one-time price of $39.99 with instant access

A retake costs far more in fees, delay, and lost work than a good practice test does.

Ready to Get Full Access?

Unlock the complete practice test with detailed answer explanations and start preparing with confidence.

Category: Contractor Licensing

Description

Sample Questions

Question 1. An electrical contractor is sizing branch-circuit conductors for a 10-horsepower, 230-volt, three-phase squirrel-cage induction motor that will run continuously. The motor nameplate lists 26.5 amperes. Using the NEC full-load current tables, what is the minimum ampacity required for the branch-circuit conductors, before any temperature or conduit-fill adjustments?

A. 28 amperes
B. 30 amperes
C. 35 amperes
D. 42 amperes

Correct Answer: C. 35 amperes

Answer Explanation:
NEC 430.22 requires branch-circuit conductors for a single continuous-duty motor to have an ampacity of at least 125 percent of the motor’s full-load current. The calculation uses the value in Table 430.250, not the nameplate amperage. For a 10-horsepower, 230-volt, three-phase motor, the table lists 28 amperes, and 28 × 1.25 equals 35 amperes. That figure is a starting point. The installer must still check the selected conductor against terminal temperature ratings and any ambient temperature or bundling adjustments. Overload protection is sized separately from the nameplate current and does not change the conductor minimum.

Why the Other Options Are Incorrect:
A. 28 amperes: Incorrect. This is the table full-load current with no 125 percent multiplier, so it leaves out the continuous-duty safety margin.
B. 30 amperes: Incorrect. It is not derived from any code factor. It likely comes from the nameplate value or a rounded estimate.
D. 42 amperes: Incorrect. It applies 150 percent, which is not the conductor rule for a standard motor branch circuit.

Quick Study Guide:
For motor circuits, use the NEC table value for conductor sizing and the nameplate value for overload protection. Multiply table full-load current by 125 percent for the branch-circuit conductor minimum. Always confirm the final conductor against 110.14(C) terminal temperature limits. Mixing up the table value and the nameplate value is a very common exam trap.

Question 2. A journeyman is pulling six 12 AWG THHN conductors of the same size and insulation type through a single length of EMT in a commercial tenant space. The foreman asks what Chapter 9 permits as the maximum percentage of the conduit’s cross-sectional area that these conductors may fill. Which answer is correct?

A. 40 percent
B. 53 percent
C. 31 percent
D. 60 percent

Correct Answer: A. 40 percent

Answer Explanation:
Chapter 9, Table 1 sets the maximum conduit fill by the number of conductors. One conductor may fill 53 percent, two may fill 31 percent, and three or more may fill 40 percent of the raceway’s cross-sectional area. Six conductors fall into the “over two” category, so 40 percent applies. The limit exists to prevent insulation damage during pulling, to allow heat to dissipate, and to make future conductor replacement possible. The contractor must still apply ampacity adjustment factors for more than three current-carrying conductors, because fill and derating are separate requirements.

Why the Other Options Are Incorrect:
B. 53 percent: Incorrect. This limit applies only to a single conductor in a raceway.
C. 31 percent: Incorrect. This limit applies to exactly two conductors, not six.
D. 60 percent: Incorrect. The code does not allow this fill for ordinary conductor installations, and it would cause pulling damage and heat buildup.

Quick Study Guide:
Memorize the three fill numbers: 53, 31, and 40 percent for one, two, and over two conductors. Then remember that conduit fill and ampacity derating are separate checks. Passing the fill test does not exempt the circuit from adjustment factors when more than three current-carrying conductors share the raceway.

Question 3. A contractor is installing a 100-ampere circuit breaker in a subpanel that feeds a detached workshop. The feeder uses copper conductors in a raceway, and the equipment grounding conductor will be copper. According to NEC Table 250.122, what is the minimum size of the equipment grounding conductor?

A. 10 AWG
B. 6 AWG
C. 12 AWG
D. 8 AWG

Correct Answer: D. 8 AWG

Answer Explanation:
Table 250.122 sizes equipment grounding conductors by the rating of the overcurrent device protecting the circuit. For a 100-ampere device, the minimum copper equipment grounding conductor is 8 AWG. The conductor must carry enough fault current to open the overcurrent device quickly, which clears the fault and limits shock and fire hazards. If the ungrounded conductors are increased in size for voltage drop, the equipment grounding conductor must be increased proportionally. The table also does not replace the separate rules for grounding electrode conductors, which are sized from the service conductors and serve a different purpose.

Why the Other Options Are Incorrect:
A. 10 AWG: Incorrect. This size is the minimum for a 60-ampere device, so it is too small for a 100-ampere circuit.
B. 6 AWG: Incorrect. This size is the minimum for a 200-ampere device and would be oversized here.
C. 12 AWG: Incorrect. This size is the minimum for a 20-ampere device and could not safely carry fault current from a 100-ampere circuit.

Quick Study Guide:
Equipment grounding conductors are sized from the overcurrent device rating, not from the load or the phase conductors. Useful copper anchor points are 20 A at 12 AWG, 60 A at 10 AWG, 100 A at 8 AWG, and 200 A at 6 AWG. Upsize the grounding conductor proportionally whenever the phase conductors are upsized.

Question 4. A contractor is performing the standard method load calculation for a new single-family dwelling with 2,400 square feet of living area. The plans show the required two small-appliance branch circuits and one laundry circuit. Using 3 volt-amperes per square foot for general lighting, 1,500 volt-amperes for each small-appliance circuit, and 1,500 volt-amperes for the laundry circuit, what is the net general load after applying the demand factors (first 3,000 volt-amperes at 100 percent, the remainder at 35 percent)?

A. 11,700 volt-amperes
B. 6,045 volt-amperes
C. 4,095 volt-amperes
D. 7,200 volt-amperes

Correct Answer: B. 6,045 volt-amperes

Answer Explanation:
Start with the general lighting load: 2,400 square feet × 3 volt-amperes equals 7,200 volt-amperes. Add the small-appliance circuits (2 × 1,500 = 3,000) and the laundry circuit (1,500), for a total of 11,700 volt-amperes. Under Table 220.42, the first 3,000 volt-amperes is counted at 100 percent, which is 3,000. The remaining 8,700 volt-amperes is counted at 35 percent, which is 3,045. Adding the two gives 6,045 volt-amperes. This net figure is then combined with the demand-adjusted appliance, range, and heating or cooling loads to size the service.

Why the Other Options Are Incorrect:
A. 11,700 volt-amperes: Incorrect. This is the total connected load before any demand factors are applied.
C. 4,095 volt-amperes: Incorrect. It applies 35 percent to the entire 11,700 volt-amperes and skips the 100 percent tier on the first 3,000.
D. 7,200 volt-amperes: Incorrect. This is the general lighting load alone, leaving out the small-appliance and laundry loads.

Quick Study Guide:
Dwelling load calculations follow a fixed order. Add lighting at 3 VA per square foot, then the small-appliance and laundry loads, then apply the 100 percent and 35 percent tiers. Skipping the first-tier step is the most common mistake. Complete the general load before adding ranges, dryers, and heating or cooling loads.

Question 5. An electrician is rough-in planning for a 480Y/277-volt panelboard in a mechanical room. The panelboard will be mounted on one wall, and the wall directly opposite is poured concrete. No other live parts are exposed on the opposite side. Using Table 110.26(A)(1), what is the minimum clear working space depth required in front of the panelboard?

A. 3 feet
B. 4 feet
C. 3 1/2 feet
D. 6 feet

Correct Answer: C. 3 1/2 feet

Answer Explanation:
Table 110.26(A)(1) sets working space depth by nominal voltage to ground and by the conditions on the opposite side. For 151 to 600 volts, Condition 1 (no grounded or live parts opposite) requires 3 feet, Condition 2 requires 3 1/2 feet, and Condition 3 requires 4 feet. Concrete, brick, and tile walls are considered grounded surfaces, so a concrete wall opposite the panelboard is a Condition 2 situation. That makes the minimum depth 3 1/2 feet. This space protects workers who must examine, adjust, or service energized equipment, and it must stay clear of storage at all times.

Why the Other Options Are Incorrect:
A. 3 feet: Incorrect. This is the Condition 1 depth and ignores the grounded concrete surface across from the panelboard.
B. 4 feet: Incorrect. This is the Condition 3 depth, which applies when live parts are exposed on both sides of the working space.
D. 6 feet: Incorrect. This number is not a working space depth in the table and may be confused with a headroom or dedicated-space dimension.

Quick Study Guide:
Working space depth depends on voltage and what faces the equipment. For 151 to 600 volts, remember 3, 3 1/2, and 4 feet for Conditions 1, 2, and 3. Concrete, brick, and tile count as grounded, which triggers Condition 2. Also keep the required width and headroom clear, and never use the space for storage.

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FAQs

How many questions are on the Nevada C-2 electrical contractor exam?

According to the current PSI candidate bulletin, the C-2 trade exam has 80 questions, and you have four hours to complete it. Confirm these details in the latest bulletin before you schedule, since PSI and the Nevada State Contractors Board set the final rules.

What score do you need to pass the Nevada C-2 exam?

The minimum passing score is 56 correct answers out of 80, which works out to 70 percent. Practice tests help you find weak subjects before test day, but a strong practice score does not guarantee the same result on the official exam.

Is the Nevada C-2 electrical exam open-book?

Yes, the trade exam is open-book, but only references approved by PSI are allowed. Check the candidate bulletin for permitted code book editions and any rules on tabs or notes. Practicing with your code book ahead of time helps you find answers faster during the exam.

What topics are covered on the Nevada C-2 electrical contractor exam?

The exam covers general electrical knowledge, services, feeders and branch circuits, grounding and bonding, conductors and cables, raceways and boxes, special occupancies, power and motors, low voltage and lighting, safety information, and overcurrent protection. Review the official PSI content outline to see how each area is weighted.

How many practice questions are in this Nevada C-2 practice test, and what does it cost?

It includes 800 multiple-choice questions with correct answers and detailed explanations for $39.99. The purchase is one-time with instant download, lifetime access, and free lifetime updates. It is an independent study resource, not an official PSI exam.