Texas Journeyman Sign 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. To provide electrical design preferences
B. To establish minimum safety standards for electrical installations
C. To replace manufacturer instructions
D. To regulate electrical equipment prices
Answer: To establish minimum safety standards for electrical installations
Rationale: The NEC provides minimum requirements intended to protect people
and property from electrical hazards.
2. A Texas journeyman sign electrician must primarily be knowledgeable in
which area?
A. Plumbing systems
B. Sign installation and electrical wiring methods
,C. Building architecture
D. HVAC design
Answer: Sign installation and electrical wiring methods
Rationale: Journeyman sign electricians specialize in electrical systems
associated with signs, including wiring, transformers, lighting, and controls.
3. What NEC article specifically covers electric signs and outline lighting?
A. Article 225
B. Article 600
C. Article 430
D. Article 250
Answer: Article 600
Rationale: NEC Article 600 contains requirements for electric signs and outline
lighting systems.
4. What is the purpose of grounding a metal sign enclosure?
A. Increase voltage
B. Provide a path for fault current
C. Reduce lighting output
D. Improve appearance
Answer: Provide a path for fault current
Rationale: Grounding allows fault current to safely return to the source and
operate protective devices.
5. What conductor is normally used for equipment grounding?
,A. Neutral conductor
B. Ungrounded conductor
C. Grounding conductor
D. Signal conductor
Answer: Grounding conductor
Rationale: Equipment grounding conductors connect exposed metal parts to
ground for safety.
6. What voltage is commonly used for neon sign transformers?
A. 12 volts
B. 24 volts
C. High voltage output
D. 120 volts only
Answer: High voltage output
Rationale: Neon signs commonly use transformers that produce high secondary
voltages needed to illuminate neon tubing.
7. Before servicing an electrical sign, what should be done first?
A. Remove the sign cover
B. Turn off power and verify absence of voltage
C. Replace lamps
D. Disconnect grounding
Answer: Turn off power and verify absence of voltage
Rationale: De-energizing and testing prevents electrical shock and arc flash
hazards.
, 8. What device protects a circuit from excessive current?
A. Transformer
B. Fuse or circuit breaker
C. Junction box
D. Relay
Answer: Fuse or circuit breaker
Rationale: Overcurrent protective devices interrupt circuits when current
exceeds safe levels.
9. What is the purpose of a disconnect switch for a sign?
A. Increase brightness
B. Provide a means to disconnect power
C. Reduce conductor size
D. Control weather conditions
Answer: Provide a means to disconnect power
Rationale: Disconnects allow safe maintenance and servicing of electrical
equipment.
10.What type of conduit is commonly used for outdoor sign wiring?
A. Flexible cord
B. Approved raceway suitable for the environment
C. Speaker wire
D. Extension cable
Answer: Approved raceway suitable for the environment
Rationale: Outdoor installations require wiring methods rated for exposure to
moisture and weather.
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. To provide electrical design preferences
B. To establish minimum safety standards for electrical installations
C. To replace manufacturer instructions
D. To regulate electrical equipment prices
Answer: To establish minimum safety standards for electrical installations
Rationale: The NEC provides minimum requirements intended to protect people
and property from electrical hazards.
2. A Texas journeyman sign electrician must primarily be knowledgeable in
which area?
A. Plumbing systems
B. Sign installation and electrical wiring methods
,C. Building architecture
D. HVAC design
Answer: Sign installation and electrical wiring methods
Rationale: Journeyman sign electricians specialize in electrical systems
associated with signs, including wiring, transformers, lighting, and controls.
3. What NEC article specifically covers electric signs and outline lighting?
A. Article 225
B. Article 600
C. Article 430
D. Article 250
Answer: Article 600
Rationale: NEC Article 600 contains requirements for electric signs and outline
lighting systems.
4. What is the purpose of grounding a metal sign enclosure?
A. Increase voltage
B. Provide a path for fault current
C. Reduce lighting output
D. Improve appearance
Answer: Provide a path for fault current
Rationale: Grounding allows fault current to safely return to the source and
operate protective devices.
5. What conductor is normally used for equipment grounding?
,A. Neutral conductor
B. Ungrounded conductor
C. Grounding conductor
D. Signal conductor
Answer: Grounding conductor
Rationale: Equipment grounding conductors connect exposed metal parts to
ground for safety.
6. What voltage is commonly used for neon sign transformers?
A. 12 volts
B. 24 volts
C. High voltage output
D. 120 volts only
Answer: High voltage output
Rationale: Neon signs commonly use transformers that produce high secondary
voltages needed to illuminate neon tubing.
7. Before servicing an electrical sign, what should be done first?
A. Remove the sign cover
B. Turn off power and verify absence of voltage
C. Replace lamps
D. Disconnect grounding
Answer: Turn off power and verify absence of voltage
Rationale: De-energizing and testing prevents electrical shock and arc flash
hazards.
, 8. What device protects a circuit from excessive current?
A. Transformer
B. Fuse or circuit breaker
C. Junction box
D. Relay
Answer: Fuse or circuit breaker
Rationale: Overcurrent protective devices interrupt circuits when current
exceeds safe levels.
9. What is the purpose of a disconnect switch for a sign?
A. Increase brightness
B. Provide a means to disconnect power
C. Reduce conductor size
D. Control weather conditions
Answer: Provide a means to disconnect power
Rationale: Disconnects allow safe maintenance and servicing of electrical
equipment.
10.What type of conduit is commonly used for outdoor sign wiring?
A. Flexible cord
B. Approved raceway suitable for the environment
C. Speaker wire
D. Extension cable
Answer: Approved raceway suitable for the environment
Rationale: Outdoor installations require wiring methods rated for exposure to
moisture and weather.
