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Electrician Ultimate Exam
Question 1. Which Virginia regulatory body issues journeyman electrician licenses? A) Virginia Department of Labor B) Board for Contractors C) Virginia Department of Environmental Quality D) Virginia State Police Answer: B Explanation: The Board for Contractors, within the Department of Professional and Occupational Regulation (DPOR), administers licensing for electricians in Virginia. Question 2. Under Virginia standards of conduct, which act is considered prohibited for a licensed electrician? A) Using a newer code edition for reference B) Performing work without a valid permit C) Submitting a timely license renewal application D) Attending continuing education courses Answer: B Explanation: Working without a required permit is a prohibited act and can lead to disciplinary action. Question 3. How often must a Virginia journeyman electrician renew their license? A) Every 1 year B) Every 2 years C) Every 3 years D) Every 5 years Answer: C Explanation: Virginia licenses are typically renewed on a three-year cycle, provided continuing education requirements are met. Question 4. Which of the following satisfies the statutory definition of a “Journeyman” in Virginia? A) 1,000 hours of classroom training only
Electrician Ultimate Exam
B) 8,000 hours of combined classroom and on-the-job experience C) 4,000 hours of on-the-job experience and 1,200 hours of classroom instruction D) No experience required if passing the exam Answer: C Explanation: Virginia requires at least 4,000 hours of work experience plus 1, hours of classroom training for journeyman eligibility. Question 5. Ohm’s Law is expressed as E = I × R. If a circuit has 24 V across a resistor of 6 Ω, what is the current? A) 2 A B) 4 A C) 6 A D) 12 A Answer: B Explanation: I = V / R = 24 V / 6 Ω = 4 A. Question 6. In a purely resistive AC circuit, the power factor is: A) 0 B) 0. C) 1 D) – Answer: C Explanation: Resistive loads have voltage and current in phase, giving a power factor of unity (1). Question 7. Which formula correctly calculates three-phase apparent power in a balanced Y-connected system? A) √3 × V_line × I_line B) V_line × I_line C) 3 × V_phase × I_phase D) √3 × V_phase × I_phase Answer: A Explanation: Apparent power S = √3 × V_line × I_line for a three-phase Y system.
Electrician Ultimate Exam
B) 30 in. wide and 36 in. deep C) 36 in. wide and 30 in. deep D) 30 in. wide and 30 in. deep Answer: B Explanation: NEC 110.26 requires at least 30 in. wide, 36 in. deep, and 6 ft. high working space. Question 12. For a panel installed in a damp location, which enclosure type is required? A) Non-metallic (NM) B) Rigid metal conduit (RMC) only C) Weather-resistant (WR) enclosure D) Any enclosure is acceptable Answer: C Explanation: Damp locations require a weather-resistant enclosure to protect equipment. Question 13. When terminating an aluminum conductor to a copper terminal, which practice is required? A) Directly torque the connection B) Use an approved antioxidant compound and a suitable connector C) Apply a soldered joint D) No special practice is needed Answer: B Explanation: Aluminum-to-copper connections must use antioxidant compound and a connector listed for mixed metals to prevent corrosion. Question 14. Which NEC article governs the installation of service-drop conductors? A) Article 250 B) Article 230 C) Article 310 D) Article 430
Electrician Ultimate Exam
Answer: B Explanation: Article 230 covers services, including service-drop and service-lateral conductors. Question 15. The main service disconnect for a single-family residence is typically located: A) In the attic B) Inside the garage or outside the building C) In the basement only D) Anywhere convenient to the homeowner Answer: B Explanation: NEC 230.71 requires the disconnect to be readily accessible, commonly in the garage or outside. Question 16. When calculating feeder load for a dwelling, which demand factor is applied to the first 3,000 VA of general lighting? A) 100 % B) 75 % C) 60 % D) 30 % Answer: A Explanation: The first 3,000 VA of lighting load is taken at 100 % per NEC Table 220.42. Question 17. A dedicated 20-amp circuit is required for a kitchen countertop receptacle. Which NEC article defines this requirement? A) Article 210.11(C)(1) B) Article 210.52(B) C) Article 210.8(A) D) Article 210.23(A)(1) Answer: D Explanation: Article 210.23(A)(1) requires a minimum 20-amp branch circuit for kitchen countertop receptacles.
Electrician Ultimate Exam
D) Only on isolated-ground receptacles Answer: A Explanation: The main bonding jumper connects the grounded conductor to the grounding electrode system at the service disconnect. Question 22. According to NEC Table 250.122, an equipment grounding conductor for a 60-amp circuit must be at least: A) 12 AWG copper B) 10 AWG copper C) 8 AWG copper D) 6 AWG copper Answer: B Explanation: Table 250.122 specifies 10 AWG copper for a 60-amp overcurrent device. Question 23. A concrete-encased electrode (“Ufer”) must have a minimum length of: A) 12 in. B) 12 ft. C) 20 ft. D) 24 in. Answer: B Explanation: NEC 250.52(A)(3) requires at least 20 ft of #4 rebar or equivalent; however, the minimum continuous concrete-encased electrode length is 12 ft per code commentary. Question 24. Which of the following is required for bonding interior metal water piping? A) No bonding is required if the pipe is non-metallic B) Use a 6 AWG copper jumper C) Connect to the grounding electrode system with a listed bonding jumper D) Only bond if the pipe is more than 4 ft long Answer: C
Electrician Ultimate Exam
Explanation: NEC 250.104(A) requires bonding of interior metal water piping to the grounding electrode system using a listed jumper. Question 25. For a 90-degree bend in EMT conduit, the minimum conduit radius is: A) 4 times the conduit diameter B) 6 times the conduit diameter C) 8 times the conduit diameter D) 10 times the conduit diameter Answer: B Explanation: NEC 358.12 requires a minimum bend radius of six times the outside diameter for EMT. Question 26. When using THHN conductors in a raceway with an ambient temperature of 40 °C, what derating factor from Table 310.15(B)(2)(a) applies? A) 100 % B) 94 % C) 87 % D) 80 % Answer: B Explanation: At 40 °C (104 °F), the derating factor for THHN is 94 % (Table 310.15(B)(2)(a)). Question 27. Which cable type is permitted for interior residential wiring in walls and ceilings? A) UF cable B) MC cable C) NM (Romex) cable D) AC cable Answer: C Explanation: NM (non-metallic sheathed) cable is allowed for interior residential applications per NEC 334. Question 28. A splice in a conduit system must be placed in a:
Electrician Ultimate Exam
Explanation: NEC 358.30 permits EMT supports at intervals not exceeding 10 ft. (or 12 ft. for short runs; the most restrictive is 10 ft., but the code allows up to 12 ft. in some cases; the answer reflects the standard 10 ft. limit, but the given option D is 12 ft. which is also acceptable per 358.30. The best answer is D.) Question 32. When installing a lighting fixture in a closet, which NEC requirement must be met? A) Fixture must be listed for damp locations B) Minimum clearance of 6 in. from the floor C) Must be a recessed luminaire only D) No special requirement; any fixture may be used Answer: B Explanation: NEC 410.10(D) requires a minimum 6-in. clearance from the floor for closet luminaires. Question 33. A GFCI receptacle must be installed in which of the following locations? A) Inside a finished basement wall B) In a garage workbench area C) In a kitchen pantry D) In a living-room outlet Answer: B Explanation: NEC 210.8(A)(2) requires GFCI protection for receptacles in garages. Question 34. The disconnecting means for a fixed electric water heater must be rated at least: A) 15 A B) 20 A C) 30 A D) 50 A Answer: C Explanation: NEC 422.31 requires a disconnect rated not less than 125 % of the heater’s rated current; most residential heaters are 30 A.
Electrician Ultimate Exam
Question 35. The locked-rotor current of a motor is typically: A) 1- 2 times the full-load current B) 3- 5 times the full-load current C) Equal to the full-load current D) Less than the full-load current Answer: B Explanation: Locked-rotor (starting) current can be 3–5 times the motor’s full-load current. Question 36. For a dry-type transformer, the primary overcurrent protection must not exceed: A) 125 % of transformer rating B) 150 % of transformer rating C) 200 % of transformer rating D) 250 % of transformer rating Answer: C Explanation: NEC 450.3(B) permits primary protection up to 200 % of the transformer’s rated current. Question 37. Which class of hazardous location is defined for areas where flammable liquids are handled in open containers? A) Class I, Division 1 B) Class II, Division 2 C) Class III, Division 1 D) Class I, Division 2 Answer: A Explanation: Class I, Division 1 covers locations where ignitable vapors or gases may be present continuously or intermittently. Question 38. In a healthcare patient-care area, which type of wiring method is required for wall-mounted receptacles? A) NM cable only B) MC cable only
Electrician Ultimate Exam
Explanation: A dedicated circuit supplies a single piece of equipment or a specific load type. Question 42. The minimum conduit fill for a single 4/0 AWG copper conductor in PVC conduit is: A) 15 % B) 20 % C) 30 % D) 40 % Answer: A Explanation: NEC 358.2 requires a maximum of 53 % fill for one conductor, but for large conductors the practical limit is 15 % to allow heat dissipation; the code references a 15 % fill for a single large conductor. Question 43. When sizing a grounding electrode conductor (GEC) for a 200 - amp service, the minimum size of copper GEC is: A) #8 AWG B) #6 AWG C) #4 AWG D) #2 AWG Answer: C Explanation: NEC Table 250.66 indicates #4 AWG copper for a 200-amp service. Question 44. A 3-phase, 4-wire feeder is installed to a commercial building. Which conductor carries the neutral? A) A black conductor B) A white conductor C) A green conductor D) A red conductor Answer: B Explanation: NEC 200.6 designates white (or gray) as the neutral color for 3 - phase, 4-wire systems. Question 45. Which NEC article governs the installation of electric signs?
Electrician Ultimate Exam
A) Article 410 B) Article 725 C) Article 590 D) Article 300 Answer: C Explanation: Article 590 covers electric signs and outline lighting. Question 46. For a residential dryer circuit, the required overcurrent protective device (OCPD) size is: A) 15 A B) 20 A C) 30 A D) 40 A Answer: C Explanation: NEC 210.11(C)(2) requires a minimum 30-amp OCPD for dryer circuits. Question 47. In a commercial office, the minimum number of AFCI-protected branch circuits required for lighting is: A) 1 per floor B) 1 per room C) All lighting circuits must be AFCI protected D) No AFCI protection required for lighting Answer: C Explanation: NEC 210.12(A) mandates AFCI protection for all 120-V, single-phase, 15 - and 20-amp branch circuits supplying outlets or devices, which includes lighting circuits. Question 48. Which of the following is true regarding the use of MC cable in wet locations? A) MC cable is prohibited in wet locations B) MC cable must be listed for wet locations C) MC cable can be used only if the conductors are THWN- 2
Electrician Ultimate Exam
Explanation: Resistance = 2 Ω/1000 ft × 30 ft = 0.06 Ω. Voltage drop = 2 × I × R (round-trip) = 2 × 15 A × 0.06 Ω = 1.8 V. Question 52. In a three-phase, 4-wire feeder, the neutral conductor is required when: A) The load is balanced B) The load is unbalanced or single-phase loads are present C) Only three-phase motors are connected D) The feeder supplies only lighting Answer: B Explanation: A neutral is needed to carry unbalanced current or single-phase loads. Question 53. Which of the following devices must be installed on the supply side of a motor starter? A) A GFCI receptacle B) A thermal overload relay C) A disconnecting means rated not less than the motor full-load current D) A surge protector Answer: C Explanation: NEC 430.102 requires a disconnecting means on the supply side, sized for the motor’s full-load current. Question 54. The NEC requires that a grounding electrode conductor be bonded to the grounding electrode at: A) The nearest outlet box B) The service equipment only C) The grounding electrode system at the point of connection D) Anywhere in the building Answer: C Explanation: NEC 250.68(A) mandates bonding at the point where the GEC connects to the grounding electrode.
Electrician Ultimate Exam
Question 55. For a 120-V, 20-amp branch circuit feeding a receptacle, the minimum size of copper conductors is: A) 14 AWG B) 12 AWG C) 10 AWG D) 8 AWG Answer: B Explanation: NEC 310.15(B)(16) shows 12 AWG copper is rated for 20 A under typical conditions. Question 56. Which of the following is a permissible method for supporting a conduit run that passes through a ceiling? A) Only by hanging from joists B) Using conduit straps spaced no more than 3 ft apart C) Using conduit clamps attached to structural members at intervals not exceeding 10 ft D) No support is required if the conduit is less than 6 ft long Answer: C Explanation: NEC 358.30 requires supports at intervals not exceeding 10 ft for EMT; similar rules apply to other raceways. Question 57. A “Ufer” ground must be installed: A) Within 12 in. of the building foundation B) In direct contact with the concrete, using at least #4 rebar C) Using a galvanized steel pipe only D) Only in commercial buildings Answer: B Explanation: NEC 250.52(A)(3) specifies a concrete-encased electrode using at least #4 rebar (or equivalent) embedded in concrete. Question 58. Which of the following is true about the use of aluminum wiring in residential branch circuits? A) It is prohibited in all new construction
Electrician Ultimate Exam
C) PVC Schedule 40 D) Flexible metal conduit (FMC) Answer: C Explanation: PVC Schedule 40 conduit is rated for direct burial per NEC 352.10. Question 62. The minimum clearance between a fire alarm control panel and a source of heat (e.g., a furnace) is: A) 3 ft. B) 6 ft. C) 12 ft. D) No specific clearance required Answer: B Explanation: NEC 760.41 requires a minimum 6-ft. clearance from heat sources for fire alarm equipment. Question 63. In a three-phase, four-wire system, a line-to-neutral voltage is measured at 120 V. What is the line-to-line voltage? A) 120 V B) 208 V C) 240 V D) 277 V Answer: B Explanation: For a 120/208-V three-phase system, line-to-line voltage = √ 3 × line-to-neutral = 1.732 × 120 ≈ 208 V. Question 64. Which of the following devices must be installed on all 125-V, 15 - and 20-amp receptacle outlets in a dwelling’s kitchen? A) AFCI B) GFCI C) Surge protector D) None of the above Answer: B
Electrician Ultimate Exam
Explanation: NEC 210.8(A)(6) requires GFCI protection for kitchen countertop receptacles. Question 65. The NEC permits the use of a “single-pole” breaker to protect a 240 - V, 2-wire motor circuit. True or false? A) True B) False Answer: B Explanation: A 240-V motor circuit requires a 2-pole breaker to simultaneously disconnect both hot conductors. Question 66. The maximum number of conductors permitted in a 1-in. flexible metal conduit (FMC) for #10 AWG THHN is: A) 9 B) 12 C) 15 D) 18 Answer: B Explanation: Annex C Table 1 lists 12 #10 AWG THHN conductors in 1-in. FMC. Question 67. Which grounding electrode is considered the most effective and is required to be installed when a concrete-encased electrode is not feasible? A) Ground rod B) Metal water pipe C) Ground ring D) Metal frame of the building Answer: A Explanation: Ground rods are the most common alternative when a Ufer ground cannot be installed. Question 68. The NEC requires that a receptacle in a laundry room be GFCI protected. Which article specifies this? A) 210.8(A)(7) B) 210.11(C)(2)
