Electrician Journeyman License Exam Prep
(2026 Updated) ⚡️ | Real Practice Questions,
Answers & Detailed Rationales, NEC Code,
Electrical Theory, Wiring & Load
Calculations Study Guide
• This prep guide contains 200 practice questions mirroring the real Journeyman
Electrician License Exam, covering NEC Code, electrical theory, wiring methods, load
calculations, motors, grounding, overcurrent protection, and more — study by topic
or simulate a timed exam for best results.
• Each question includes five options (A–E), a clearly highlighted correct answer with
full EXPERT RATIONALE — read every EXPERT RATIONALE even when you get it
right, as understanding the "why" is what passes the exam.
ELECTRICIAN JOURNEYMAN LICENSE EXAM PREP (2026)
200 Real Practice Questions | NEC Code | Theory | Wiring | Load Calculations
SECTION 1: NEC CODE & GENERAL REQUIREMENTS
1. According to the NEC, the minimum cover requirement for direct-buried
conductors in a residential driveway using RMC (Rigid Metal Conduit) is:
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
E. 6 inches — RMC requires only 6 inches of cover
Correct Answer: E — 6 inches EXPERT RATIONALE: NEC Table 300.5
specifies that RMC (Rigid Metal Conduit) only requires 6 inches of cover under a
,residential driveway, the shallowest of all wiring methods due to its mechanical
strength.
2. The NEC is formally published by which organization?
A. OSHA
B. IEEE
C. UL (Underwriters Laboratories)
D. NFPA (National Fire Protection Association)
E. ANSI
Correct Answer: D — NFPA EXPERT RATIONALE: The National Electrical
Code (NEC) is published by the National Fire Protection Association (NFPA) as NFPA
70. It is updated every three years.
3. According to NEC 210.52, receptacles in a kitchen must be installed to serve
countertop spaces so that no point along the wall is more than ___ from a
receptacle outlet.
A. 4 feet
B. 2 feet
C. 3 feet
D. 6 feet
E. 18 inches
Correct Answer: B — 2 feet EXPERT RATIONALE: NEC 210.52(C) requires
that kitchen counter receptacles be placed so no point along the countertop wall
space is more than 2 feet from a receptacle, ensuring appliances can be used safely
anywhere along the counter.
,4. What is the minimum height for a service entrance head (weatherhead)
above a roofline with a slope of less than 4/12?
A. 8 feet
B. 3 feet
C. 18 inches
D. 24 inches
E. 36 inches
Correct Answer: C — 18 inches EXPERT RATIONALE: NEC 230.24(A)
requires service conductors above a roof to maintain at least 8 feet clearance, but a
18-inch exception applies for the final 4 feet of a conductor run down to a through-
the-roof raceway or service entrance, allowing the drip loop to be closer.
5. A GFCI receptacle is required in which of the following locations per the
NEC?
A. Bedroom
B. Living room
C. Hallway
D. Garage
E. Dining room
Correct Answer: D — Garage EXPERT RATIONALE: NEC 210.8(A) mandates
GFCI protection in all garage outlets (attached and detached with power), as well as
bathrooms, kitchens near sinks, outdoors, unfinished basements, crawl spaces, and
near pools.
6. Per NEC Article 100, the definition of "Ampacity" is:
A. The maximum voltage a conductor can carry
, B. The resistance of a conductor per unit length
C. The maximum current a conductor can carry continuously under the
conditions of use without exceeding its temperature rating
D. The total power capacity of a circuit breaker
E. The current required to trip a breaker
Correct Answer: C EXPERT RATIONALE: Ampacity is defined in NEC Article
100 as the maximum current, in amperes, a conductor can carry continuously
under conditions of use without exceeding its temperature rating.
7. What AWG wire size is required for a 20-ampere, 120-volt branch circuit?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
E. 16 AWG
Correct Answer: B — 12 AWG EXPERT RATIONALE: NEC 240.4(D) requires
12 AWG copper conductors for 20-ampere branch circuits. 14 AWG is only rated for
15-ampere circuits. Using undersized wire creates a fire hazard.
8. Per NEC 230.79, the minimum ampacity of a service entrance for a single-
family dwelling is:
A. 60 amperes
B. 150 amperes
C. 100 amperes
D. 200 amperes
E. 50 amperes
(2026 Updated) ⚡️ | Real Practice Questions,
Answers & Detailed Rationales, NEC Code,
Electrical Theory, Wiring & Load
Calculations Study Guide
• This prep guide contains 200 practice questions mirroring the real Journeyman
Electrician License Exam, covering NEC Code, electrical theory, wiring methods, load
calculations, motors, grounding, overcurrent protection, and more — study by topic
or simulate a timed exam for best results.
• Each question includes five options (A–E), a clearly highlighted correct answer with
full EXPERT RATIONALE — read every EXPERT RATIONALE even when you get it
right, as understanding the "why" is what passes the exam.
ELECTRICIAN JOURNEYMAN LICENSE EXAM PREP (2026)
200 Real Practice Questions | NEC Code | Theory | Wiring | Load Calculations
SECTION 1: NEC CODE & GENERAL REQUIREMENTS
1. According to the NEC, the minimum cover requirement for direct-buried
conductors in a residential driveway using RMC (Rigid Metal Conduit) is:
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
E. 6 inches — RMC requires only 6 inches of cover
Correct Answer: E — 6 inches EXPERT RATIONALE: NEC Table 300.5
specifies that RMC (Rigid Metal Conduit) only requires 6 inches of cover under a
,residential driveway, the shallowest of all wiring methods due to its mechanical
strength.
2. The NEC is formally published by which organization?
A. OSHA
B. IEEE
C. UL (Underwriters Laboratories)
D. NFPA (National Fire Protection Association)
E. ANSI
Correct Answer: D — NFPA EXPERT RATIONALE: The National Electrical
Code (NEC) is published by the National Fire Protection Association (NFPA) as NFPA
70. It is updated every three years.
3. According to NEC 210.52, receptacles in a kitchen must be installed to serve
countertop spaces so that no point along the wall is more than ___ from a
receptacle outlet.
A. 4 feet
B. 2 feet
C. 3 feet
D. 6 feet
E. 18 inches
Correct Answer: B — 2 feet EXPERT RATIONALE: NEC 210.52(C) requires
that kitchen counter receptacles be placed so no point along the countertop wall
space is more than 2 feet from a receptacle, ensuring appliances can be used safely
anywhere along the counter.
,4. What is the minimum height for a service entrance head (weatherhead)
above a roofline with a slope of less than 4/12?
A. 8 feet
B. 3 feet
C. 18 inches
D. 24 inches
E. 36 inches
Correct Answer: C — 18 inches EXPERT RATIONALE: NEC 230.24(A)
requires service conductors above a roof to maintain at least 8 feet clearance, but a
18-inch exception applies for the final 4 feet of a conductor run down to a through-
the-roof raceway or service entrance, allowing the drip loop to be closer.
5. A GFCI receptacle is required in which of the following locations per the
NEC?
A. Bedroom
B. Living room
C. Hallway
D. Garage
E. Dining room
Correct Answer: D — Garage EXPERT RATIONALE: NEC 210.8(A) mandates
GFCI protection in all garage outlets (attached and detached with power), as well as
bathrooms, kitchens near sinks, outdoors, unfinished basements, crawl spaces, and
near pools.
6. Per NEC Article 100, the definition of "Ampacity" is:
A. The maximum voltage a conductor can carry
, B. The resistance of a conductor per unit length
C. The maximum current a conductor can carry continuously under the
conditions of use without exceeding its temperature rating
D. The total power capacity of a circuit breaker
E. The current required to trip a breaker
Correct Answer: C EXPERT RATIONALE: Ampacity is defined in NEC Article
100 as the maximum current, in amperes, a conductor can carry continuously
under conditions of use without exceeding its temperature rating.
7. What AWG wire size is required for a 20-ampere, 120-volt branch circuit?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
E. 16 AWG
Correct Answer: B — 12 AWG EXPERT RATIONALE: NEC 240.4(D) requires
12 AWG copper conductors for 20-ampere branch circuits. 14 AWG is only rated for
15-ampere circuits. Using undersized wire creates a fire hazard.
8. Per NEC 230.79, the minimum ampacity of a service entrance for a single-
family dwelling is:
A. 60 amperes
B. 150 amperes
C. 100 amperes
D. 200 amperes
E. 50 amperes
