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100+ Free NV C-2 Electrical Practice Questions

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2026 Statistics

Key Facts: NV C-2 Electrical Exam

80 Q

Official Exam Questions

PSI Nevada Contractor CIB updated 3/25/2026

70%

Passing Score

PSI Nevada Contractor CIB updated 3/25/2026

4 hours

Time Allowed

PSI Nevada Contractor CIB updated 3/25/2026

USD 95

PSI Exam Fee (one portion)

PSI Nevada Contractor CIB updated 3/25/2026

Open Book

Book Policy

PSI Nevada Contractor CIB updated 3/25/2026

Nevada C-2 Electrical Contractor Examination is the official NSCB/PSI open book exam: 80 questions, 70% (56 of 80 points), 4 hours, USD 95 (bulletin 270, updated 3/25/2026). Official delivery: English and Spanish.

Sample NV C-2 Electrical Practice Questions

Try these sample questions to test your NV C-2 Electrical exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A balanced 480-volt, three-phase load draws 72 amperes at a lagging power factor of 0.86. What is the real power of this load?
A.29.7 kW
B.51.5 kW
C.59.9 kW
D.69.1 kW
Explanation: Three-phase real power is P = 1.732 × V × I × PF. Substituting gives 1.732 × 480 × 72 × 0.86 = 51,480 W, or 51.5 kW. Apparent power without the power factor is 59.9 kVA and is not the real-power answer.
2A 120-volt, single-phase, 2-wire branch circuit supplies a 16-ampere load. The one-way conductor length is 100 feet of 12 AWG copper (K = 12.9, area = 6,530 CM). What is the calculated voltage drop?
A.3.16 volts
B.5.47 volts
C.10.39 volts
D.6.32 volts
Explanation: Single-phase voltage drop is VD = (2 × K × I × L) / CM. Substituting gives (2 × 12.9 × 16 × 100) / 6,530 = 41,280 / 6,530 = 6.32 V. That is 5.3 percent of 120 V, above the NEC 210.19(A) Informational Note 3-percent branch-circuit recommendation.
3A series 60 Hz circuit has 12 ohms of resistance, 20 ohms of inductive reactance, and 11 ohms of capacitive reactance. What is the impedance of the circuit?
A.15.0 ohms
B.9.0 ohms
C.21.9 ohms
D.43.0 ohms
Explanation: Series impedance is Z = √(R² + (XL − XC)²). Net reactance is 20 − 11 = 9 ohms, so Z = √(12² + 9²) = √(144 + 81) = √225 = 15.0 ohms.
4A 45 kVA, three-phase transformer has a 480-volt delta primary and a 208Y/120-volt secondary. What is the full-load secondary line current?
A.54.1 A
B.93.6 A
C.216.3 A
D.124.9 A
Explanation: Three-phase transformer current is I = (kVA × 1000) / (1.732 × V). Secondary current is 45,000 / (1.732 × 208) = 45,000 / 360.3 = 124.9 A. Primary current at 480 V is 54.1 A.
5On a 480Y/277-volt system, what is the peak (zero-to-peak) value of the line-to-neutral sine wave?
A.196 V
B.277 V
C.679 V
D.392 V
Explanation: RMS voltage times √2 is the peak value. 277 × 1.414 = 392 V. Peak-to-peak would be twice that (784 V), and 480 × 1.414 = 679 V is the line-to-line peak.
6A 240/120-volt, three-phase, 4-wire delta service has a high-leg. What is the voltage from the high-leg to the grounded conductor, and how must that phase be identified in the panelboard?
A.208 volts, identified orange and placed on phase B
B.120 volts, identified white
C.240 volts, identified yellow and placed on phase C
D.277 volts, identified brown and placed on phase A
Explanation: On a 240/120-volt 4-wire delta, the high-leg to grounded conductor is 208 volts (120 × 1.732). NEC 110.15 and 408.3(E)(1) require the high-leg to be orange (or other effective means) and landed on phase B in the panelboard.
7Which formula correctly converts a 208-volt, three-phase, 18-kilowatt balanced load at 0.90 power factor into line current?
A.I = 18,000 / 208
B.I = 18,000 / (208 × 0.90)
C.I = 18,000 / (1.732 × 208)
D.I = 18,000 / (1.732 × 208 × 0.90)
Explanation: Because 18 kW is real power, I = P / (1.732 × V × PF) = 18,000 / (1.732 × 208 × 0.90) = 55.5 A. Omitting PF yields apparent-power current, and omitting 1.732 treats the load as single-phase.
8A 480-volt, three-phase feeder carries 80 amperes over 250 feet of 2 AWG copper (K = 12.9, area = 66,360 CM). What is the percent voltage drop?
A.1.40 percent
B.0.81 percent
C.1.62 percent
D.2.80 percent
Explanation: Three-phase VD = (1.732 × K × I × L) / CM = (1.732 × 12.9 × 80 × 250) / 66,360 = 6.73 V. Percent drop is 6.73 / 480 = 0.0140, or 1.40 percent, within the NEC Informational Note 3-percent feeder recommendation.
9Under NEC 2017 Table 220.12, what unit lighting load is used for a general lighting calculation in an office building?
A.1 VA per square foot
B.2 VA per square foot
C.3 VA per square foot
D.3.5 VA per square foot
Explanation: NEC 2017 Table 220.12 lists office buildings at 3.5 VA per square foot. Banks use the same 3.5 VA figure. Stores and dwellings are 3 VA, and hospitals and hotels are 2 VA.
10For a standard dwelling-unit service calculation, NEC 220.52 requires which minimum small-appliance and laundry branch-circuit loads?
A.Two 1,500 VA small-appliance circuits and one 1,500 VA laundry circuit
B.One 1,500 VA small-appliance circuit and no laundry circuit
C.Two 1,800 VA receptacle circuits and one 1,200 VA laundry circuit
D.Three 2,000 VA kitchen circuits and one 20-ampere bathroom circuit only
Explanation: NEC 220.52(A) adds 1,500 VA for each of the two or more 20-ampere small-appliance circuits required by 210.11(C)(1). Section 220.52(B) adds 1,500 VA for the laundry circuit required by 210.11(C)(2). Those 1,500 VA loads are then processed with the general lighting load under Table 220.42.

About the NV C-2 Electrical Exam

The Nevada C-2 Electrical Contractor Examination is the official Nevada State Contractors Board trade or management examination administered by PSI Services LLC. The official exam has 80 scored questions. Passing is 70% (56 of 80 points) in 4 hours. The examination is open book. Approved center references include NEC 2017 and NFPA 72 (2010 or 2013) (allowed in center). PSI lists USD 95 for one examination portion and USD 140 if taken with CMS; otherwise USD 95 per trade exam (Candidate Information Bulletin updated 3/25/2026). NSCB requires a separate CMS examination for most new applicants, plus a USD 300 application fee and a USD 600 biennial license fee. PSI also offers this examination in Spanish; this bank is an English-language MCQ study adaptation, not an official translation. It does not replace required trade experience, board approval, fingerprints, bonding, or the official examination.

Assessment

Open Book computer-based multiple-choice. NEC 2017 and NFPA 72 (2010 or 2013) (allowed in center)

Time Limit

4 hours

Passing Score

70% (56 of 80 points)

Exam Fee

USD 95 (PSI Services LLC (for the Nevada State Contractors Board))

NV C-2 Electrical Exam Content Outline

8%

General Electrical Knowledge

Electrical theory and calculations (6 items)

9%

Service, Feeders, and Branch Circuits

Services, feeders, and branch circuits (7 items)

9%

Grounding and Bonding

Grounding and bonding (7 items)

10%

Conductors and Cables

Conductors and cables (8 items)

9%

Raceways and Boxes

Raceways and boxes (7 items)

6%

Special Occupancies and Equipment

Special occupancies and equipment (5 items)

8%

Electrical Power

Electrical power systems (6 items)

8%

Motors

Motors (6 items)

2%

Low Voltage

Low-voltage systems (2 items)

6%

Lighting

Lighting (5 items)

2%

Illuminated Signs

Illuminated signs (2 items)

2%

Fire Detection and Alarm Systems

Fire detection and alarms (2 items)

10%

Safety Information

Electrical safety (8 items)

6%

Transmission Lines

Transmission lines (5 items)

5%

Overcurrent Protection

Overcurrent protection (4 items)

How to Pass the NV C-2 Electrical Exam

What You Need to Know

  • Passing score: 70% (56 of 80 points)
  • Assessment: Open Book computer-based multiple-choice. NEC 2017 and NFPA 72 (2010 or 2013) (allowed in center)
  • Time limit: 4 hours
  • Exam fee: USD 95

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

NV C-2 Electrical Study Tips from Top Performers

1Distribute study time to the official bulletin 270 content outline (updated 3/25/2026)
2Use only the PSI-listed references; temporary tabs such as Post-it notes are prohibited
3Confirm NSCB experience documentation before scheduling with PSI
4This bank is an English-language MCQ study aid, not an official PSI form

Frequently Asked Questions

How many questions are on the Nevada C-2 Electrical Contractor Examination?

The official PSI examination has 80 scored questions. Passing is 70% (56 of 80 points) within 4 hours (Candidate Information Bulletin 270, updated 3/25/2026).

How much does the NV C-2 Electrical exam cost?

PSI lists USD 95 for one examination portion. Two portions cost USD 140 only if the second portion is CMS. NSCB charges a separate USD 300 application fee and USD 600 biennial license fee.

Is the NV C-2 Electrical exam open book?

Yes. PSI lists this examination as open book. NEC 2017 and NFPA 72 (2010 or 2013) (allowed in center)

Do I still need the CMS examination?

CMS is the required Nevada business-and-law examination. Most new applicants must pass CMS and a trade examination for the requested classification. In most cases you will not retake an exam if you have actively served as a qualified employee in the same classification within the last four years.