Tennessee (TN) CE-A, H High Voltage Electrical
Contractor Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. What is the primary purpose of the Tennessee CE-A, H High
Voltage Electrical Contractor license?
A. Residential low-voltage wiring only
B. Commercial lighting installation
C. Installation and maintenance of systems above 600 volts
D. Electrical inspection services only
Answer: C
High-voltage contractors are licensed to work on systems
exceeding 600 volts.
2. Which organization publishes the National Electrical Code (NEC)?
A. OSHA
B. NFPA
C. IEEE
D. ANSI
Answer: B
The NEC is published by the National Fire Protection Association.
3. What voltage level is generally considered “high voltage” under
NEC guidelines?
A. Over 120 volts
B. Over 240 volts
, C. Over 480 volts
D. Over 600 volts
Answer: D
NEC typically defines high voltage as systems exceeding 600 volts.
4. Which permit is required before beginning high-voltage electrical
work in Tennessee?
A. Environmental permit
B. Local building/electrical permit
C. Federal OSHA permit
D. Utility permit only
Answer: B
Local authorities require permits prior to electrical installation.
5. What is the primary hazard associated with high-voltage electrical
systems?
A. Noise exposure
B. Arc flash and shock
C. Chemical exposure
D. Repetitive motion injury
Answer: B
High voltage significantly increases the risk of arc flash and fatal
shock.
6. Which type of transformer is commonly used to step down
transmission voltage for distribution?
A. Isolation transformer
B. Autotransformer
C. Distribution transformer
D. Control transformer
, Answer: C
Distribution transformers reduce voltage for local distribution.
7. What PPE is most critical when working on energized high-voltage
equipment?
A. Cotton gloves
B. Arc-rated clothing
C. Steel-toe boots only
D. Hearing protection
Answer: B
Arc-rated clothing protects against arc flash injuries.
8. What NEC article primarily covers high-voltage installations?
A. Article 110
B. Article 230
C. Article 300
D. Article 490
Answer: D
Article 490 addresses equipment operating over 600 volts.
9. Grounding of high-voltage systems is mainly intended to:
A. Improve efficiency
B. Reduce lightning damage
C. Limit voltage to ground
D. Increase system capacity
Answer: C
Grounding stabilizes voltage and limits dangerous potentials.
10. Which testing method verifies insulation integrity in high-
voltage cables?
A. Continuity testing
, B. Megger testing
C. Polarity testing
D. Load testing
Answer: B
A megohmmeter tests insulation resistance.
11. What color is commonly used for high-voltage warning
signage?
A. Blue
B. Green
C. Red
D. Orange
Answer: D
Orange is widely used for high-voltage hazard identification.
12. Lockout/tagout procedures are required to:
A. Increase productivity
B. Prevent unauthorized access
C. Control hazardous energy
D. Document maintenance work
Answer: C
LOTO protects workers from unexpected energization.
13. Who enforces workplace electrical safety regulations?
A. NEC
B. NFPA
C. OSHA
D. State licensing board
Answer: C
OSHA enforces safety regulations in workplaces.
Contractor Practice Exam Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant Download Pdf
1. What is the primary purpose of the Tennessee CE-A, H High
Voltage Electrical Contractor license?
A. Residential low-voltage wiring only
B. Commercial lighting installation
C. Installation and maintenance of systems above 600 volts
D. Electrical inspection services only
Answer: C
High-voltage contractors are licensed to work on systems
exceeding 600 volts.
2. Which organization publishes the National Electrical Code (NEC)?
A. OSHA
B. NFPA
C. IEEE
D. ANSI
Answer: B
The NEC is published by the National Fire Protection Association.
3. What voltage level is generally considered “high voltage” under
NEC guidelines?
A. Over 120 volts
B. Over 240 volts
, C. Over 480 volts
D. Over 600 volts
Answer: D
NEC typically defines high voltage as systems exceeding 600 volts.
4. Which permit is required before beginning high-voltage electrical
work in Tennessee?
A. Environmental permit
B. Local building/electrical permit
C. Federal OSHA permit
D. Utility permit only
Answer: B
Local authorities require permits prior to electrical installation.
5. What is the primary hazard associated with high-voltage electrical
systems?
A. Noise exposure
B. Arc flash and shock
C. Chemical exposure
D. Repetitive motion injury
Answer: B
High voltage significantly increases the risk of arc flash and fatal
shock.
6. Which type of transformer is commonly used to step down
transmission voltage for distribution?
A. Isolation transformer
B. Autotransformer
C. Distribution transformer
D. Control transformer
, Answer: C
Distribution transformers reduce voltage for local distribution.
7. What PPE is most critical when working on energized high-voltage
equipment?
A. Cotton gloves
B. Arc-rated clothing
C. Steel-toe boots only
D. Hearing protection
Answer: B
Arc-rated clothing protects against arc flash injuries.
8. What NEC article primarily covers high-voltage installations?
A. Article 110
B. Article 230
C. Article 300
D. Article 490
Answer: D
Article 490 addresses equipment operating over 600 volts.
9. Grounding of high-voltage systems is mainly intended to:
A. Improve efficiency
B. Reduce lightning damage
C. Limit voltage to ground
D. Increase system capacity
Answer: C
Grounding stabilizes voltage and limits dangerous potentials.
10. Which testing method verifies insulation integrity in high-
voltage cables?
A. Continuity testing
, B. Megger testing
C. Polarity testing
D. Load testing
Answer: B
A megohmmeter tests insulation resistance.
11. What color is commonly used for high-voltage warning
signage?
A. Blue
B. Green
C. Red
D. Orange
Answer: D
Orange is widely used for high-voltage hazard identification.
12. Lockout/tagout procedures are required to:
A. Increase productivity
B. Prevent unauthorized access
C. Control hazardous energy
D. Document maintenance work
Answer: C
LOTO protects workers from unexpected energization.
13. Who enforces workplace electrical safety regulations?
A. NEC
B. NFPA
C. OSHA
D. State licensing board
Answer: C
OSHA enforces safety regulations in workplaces.
