Texas Journeyman Electrician
Examination Practice Exam 2026 | 100
Questions & Answers with Detailed
Rationales | Complete Exam Prep &
Study Guide
1. What is the primary purpose of the National Electrical Code (NEC)?
A. Reduce installation costs
B. Increase equipment efficiency
C. Safeguard persons and property from electrical hazards
D. Standardize electrical products
Answer: C. Safeguard persons and property from electrical hazards
Rationale: The NEC is intended to provide practical safeguarding of people and
property from hazards arising from the use of electricity.
2. What is the minimum working space depth in front of electrical equipment
operating at 0–150 volts to ground under Condition 1?
A. 24 inches
B. 36 inches
C. 42 inches
D. 48 inches
,Answer: B. 36 inches
Rationale: NEC 110.26(A)(1) requires a minimum working depth of 36 inches
under Condition 1 for equipment rated 0–150 volts to ground.
3. Which conductor is intentionally connected to earth?
A. Equipment grounding conductor
B. Bonding jumper
C. Grounded conductor
D. Equipment bonding conductor
Answer: C. Grounded conductor
Rationale: The grounded conductor, commonly called the neutral, is
intentionally connected to earth at the service.
4. What color is commonly used to identify an equipment grounding
conductor?
A. Black
B. White
C. Red
D. Green
Answer: D. Green
Rationale: Green or bare conductors are recognized for equipment grounding
purposes.
5. What device protects people from electrical shock in wet locations?
A. AFCI
B. Standard breaker
, C. Disconnect switch
D. GFCI
Answer: D. GFCI
Rationale: Ground-Fault Circuit Interrupters detect leakage current and quickly
disconnect power to reduce shock hazards.
6. Which NEC chapter contains general requirements?
A. Chapter 3
B. Chapter 5
C. Chapter 1
D. Chapter 9
Answer: C. Chapter 1
Rationale: Chapter 1 contains general installation requirements, definitions, and
enforcement rules.
7. What is the standard voltage of a typical residential branch circuit?
A. 208 volts
B. 120 volts
C. 240 volts
D. 277 volts
Answer: B. 120 volts
Rationale: Most residential lighting and receptacle circuits operate at 120 volts.
8. Which conductor carries current only during fault conditions?
A. Neutral
B. Ungrounded conductor
, C. Equipment grounding conductor
D. Grounded conductor
Answer: C. Equipment grounding conductor
Rationale: The equipment grounding conductor provides a low-impedance path
during ground faults.
9. A 20-amp branch circuit requires what minimum copper conductor size?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
Answer: B. 12 AWG
Rationale: NEC requires 12 AWG copper conductors to protect a 20-amp circuit.
10.Which device protects wiring from overloads?
A. Transformer
B. Relay
C. Circuit breaker
D. Contactor
Answer: C. Circuit breaker
Rationale: Circuit breakers protect conductors against overcurrent caused by
overloads and short circuits.
11.What does AFCI stand for?
A. Automatic Fault Circuit Indicator
B. Arc-Fault Circuit Interrupter
Examination Practice Exam 2026 | 100
Questions & Answers with Detailed
Rationales | Complete Exam Prep &
Study Guide
1. What is the primary purpose of the National Electrical Code (NEC)?
A. Reduce installation costs
B. Increase equipment efficiency
C. Safeguard persons and property from electrical hazards
D. Standardize electrical products
Answer: C. Safeguard persons and property from electrical hazards
Rationale: The NEC is intended to provide practical safeguarding of people and
property from hazards arising from the use of electricity.
2. What is the minimum working space depth in front of electrical equipment
operating at 0–150 volts to ground under Condition 1?
A. 24 inches
B. 36 inches
C. 42 inches
D. 48 inches
,Answer: B. 36 inches
Rationale: NEC 110.26(A)(1) requires a minimum working depth of 36 inches
under Condition 1 for equipment rated 0–150 volts to ground.
3. Which conductor is intentionally connected to earth?
A. Equipment grounding conductor
B. Bonding jumper
C. Grounded conductor
D. Equipment bonding conductor
Answer: C. Grounded conductor
Rationale: The grounded conductor, commonly called the neutral, is
intentionally connected to earth at the service.
4. What color is commonly used to identify an equipment grounding
conductor?
A. Black
B. White
C. Red
D. Green
Answer: D. Green
Rationale: Green or bare conductors are recognized for equipment grounding
purposes.
5. What device protects people from electrical shock in wet locations?
A. AFCI
B. Standard breaker
, C. Disconnect switch
D. GFCI
Answer: D. GFCI
Rationale: Ground-Fault Circuit Interrupters detect leakage current and quickly
disconnect power to reduce shock hazards.
6. Which NEC chapter contains general requirements?
A. Chapter 3
B. Chapter 5
C. Chapter 1
D. Chapter 9
Answer: C. Chapter 1
Rationale: Chapter 1 contains general installation requirements, definitions, and
enforcement rules.
7. What is the standard voltage of a typical residential branch circuit?
A. 208 volts
B. 120 volts
C. 240 volts
D. 277 volts
Answer: B. 120 volts
Rationale: Most residential lighting and receptacle circuits operate at 120 volts.
8. Which conductor carries current only during fault conditions?
A. Neutral
B. Ungrounded conductor
, C. Equipment grounding conductor
D. Grounded conductor
Answer: C. Equipment grounding conductor
Rationale: The equipment grounding conductor provides a low-impedance path
during ground faults.
9. A 20-amp branch circuit requires what minimum copper conductor size?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 8 AWG
Answer: B. 12 AWG
Rationale: NEC requires 12 AWG copper conductors to protect a 20-amp circuit.
10.Which device protects wiring from overloads?
A. Transformer
B. Relay
C. Circuit breaker
D. Contactor
Answer: C. Circuit breaker
Rationale: Circuit breakers protect conductors against overcurrent caused by
overloads and short circuits.
11.What does AFCI stand for?
A. Automatic Fault Circuit Indicator
B. Arc-Fault Circuit Interrupter
