10 exam-style questions with answers and explanations, straight from our 1,030-question bank. Tap an answer to check yourself. When you're ready, take the scored version in the free practice test.
The NV-C2 exam has 80 questions and runs 4 hours.
These 10 free NV-C2 questions are organized by exam domain, so you can see how each part of the Nevada Electrical Contractor (C-2) Trade Exam blueprint is tested. Reveal the answer and explanation under each question.
A balanced 480 V three-phase load draws 30 kW of real power at a power factor of 0.80. A clamp meter is placed around one phase conductor. Which current is closest to the expected reading?
Correct answer: B - 45.1 A
A 1,800 ft² dwelling has the minimum two small-appliance circuits and one laundry circuit. Before adding appliances, heating, cooling, or motors, what demand load applies to the combined general-lighting, small-appliance, and laundry portion under the standard method?
Correct answer: D - 5,415 VA
A new 120 V, 20 A branch circuit supplies receptacles in a dwelling-unit laundry area. Under the 2017 NEC, which protection is required?
Correct answer: A - Both GFCI and AFCI protection
A single rod electrode at a detached building measures 18 ohms to earth. All other required grounding and bonding is complete. What additional rod-electrode action is required?
Correct answer: C - No supplemental rod is required
A service disconnect is outdoors. A four-wire feeder supplies an interior panel, where the inspector finds the neutral bar bonded to the cabinet. How should the panel be corrected?
Correct answer: D - Isolate the neutral and keep the equipment-grounding bar bonded
Six 8 AWG copper THHN current-carrying conductors share a raceway in 40°C ambient and terminate on 75°C equipment. Use 55 A for the 90°C ampacity, an 80% adjustment factor, and a 0.91 temperature-correction factor. What is the highest standard breaker rating that does not exceed the adjusted ampacity?
Correct answer: B - 40 A
A crew pulls conductors marked THHN only through buried PVC between two buildings. The conduit is solvent-welded and the conductors pass an insulation-resistance test. The correct field decision is to:
Correct answer: C - Replace the conductors with a wet-location-listed type
A box contains six 12 AWG insulated conductors that enter and splice, one receptacle yoke connected by a 12 AWG pigtail entirely within the box, one internal cable clamp, and all 12 AWG equipment-grounding conductors. Using 2.25 in³ per 12 AWG conductor equivalent, what minimum box volume is required?
Correct answer: A - 22.5 in³
An 8-ft EMT run contains two current-carrying ungrounded conductors and one wire-type equipment-grounding conductor. At the raceway-fill step, which maximum fill percentage applies?
Correct answer: A - 40%, because all three conductors occupy raceway area
A grain-transfer room routinely develops an airborne flour-dust cloud during normal conveying. Which hazardous-location designation matches this condition?
Correct answer: C - Class II, Division 1, Group G
The NV-C2 exam also covers these domains. Drill them in the full free practice test:
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