South Carolina Distribution Line
Technician Certification License Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. What is the primary purpose of a distribution line technician in South
Carolina?
A. Installing underground fiber optic cable
B. Maintaining and repairing electrical distribution systems to ensure
safe and reliable delivery of electricity
C. Designing residential electrical wiring
D. Supervising nuclear power plant operations
The primary role of a distribution line technician is to maintain and
repair electrical distribution systems to ensure reliable and safe
power delivery.
2. Which of the following best describes a radial distribution system?
A. A looped system with bidirectional power flow
B. A system where each customer has a single path from the source
C. A network with multiple interconnections
D. A system only used for high-voltage transmission
A radial system supplies each customer from a single path, making it
simple but less reliable than looped systems.
3. What is the nominal voltage of a typical rural distribution line in
South Carolina?
A. 120/240 V
B. 7,200 V
, C. 12,470 V
D. 34,500 V
Many rural distribution circuits operate at a primary voltage near
12.47 kV before stepping down for customer use.
4. Which device is used to step down distribution voltage to residential
service voltage?
A. Recloser
B. Sectionalizer
C. Transformer
D. Capacitor bank
Transformers reduce high distribution voltages to the lower voltages
appropriate for residential or commercial use.
5. During hot stick use, which safety principle must be followed?
A. Always grip the stick with one hand
B. Use hot sticks only for grounding
C. Maintain proper distance to prevent electrical contact
D. Wet the tool before use
Hot sticks are insulated tools that provide distance from energized
parts to prevent electrical contact.
6. What is the first step when arriving at a reported outage scene?
A. Restore line immediately
B. Call the customer to diagnose
C. Assess the situation and ensure safety
D. Replace all poles in the area
Safety assessment and situational awareness are the first priorities
before any work begins.
7. Which PPE item is required when performing live-line work?
A. Cotton work gloves
B. Safety boots only
C. Insulated rubber gloves with leather protectors
D. Apron only
Insulated rubber gloves with leather protectors provide necessary
protection against electrical hazards.
8. What does OSHA stand for?
A. Operational Safety and Hazard Administration
, B. Organization for Safety and Health Accreditation
C. Occupational Safety and Health Administration
D. Office of Safety and Hazard Assessment
OSHA is the regulatory body that enforces workplace safety
standards, including electrical line work.
9. What is the purpose of a cutout fuse on a distribution line?
A. To step up voltage
B. To protect equipment by interrupting fault currents
C. To ground the system
D. To measure power factor
Cutout fuses protect equipment by opening the circuit during faults
to prevent damage.
10. Which tool is commonly used to tighten conductor clamps on
hardware?
A. Wire cutter
B. Insulated bucket
C. Torque wrench
D. Voltage detector
Torque wrenches ensure connectors are tightened to specified values
for safety and reliability.
11. What is the Danger Zone boundary distance for live-line
operation on a 7.2 kV circuit?
A. 5 inches
B. 12 inches
C. Varies based on voltage and OSHA standards
D. 24 feet
OSHA specifies minimum approach distances based on voltage; thus
the exact distance varies and must be referenced from standards.
12. Which conductor type is most often used in overhead
distribution?
A. Coaxial cable
B. Aluminum conductor steel reinforced (ACSR)
C. Copper telephone wire
D. Fiber optic
Technician Certification License Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. What is the primary purpose of a distribution line technician in South
Carolina?
A. Installing underground fiber optic cable
B. Maintaining and repairing electrical distribution systems to ensure
safe and reliable delivery of electricity
C. Designing residential electrical wiring
D. Supervising nuclear power plant operations
The primary role of a distribution line technician is to maintain and
repair electrical distribution systems to ensure reliable and safe
power delivery.
2. Which of the following best describes a radial distribution system?
A. A looped system with bidirectional power flow
B. A system where each customer has a single path from the source
C. A network with multiple interconnections
D. A system only used for high-voltage transmission
A radial system supplies each customer from a single path, making it
simple but less reliable than looped systems.
3. What is the nominal voltage of a typical rural distribution line in
South Carolina?
A. 120/240 V
B. 7,200 V
, C. 12,470 V
D. 34,500 V
Many rural distribution circuits operate at a primary voltage near
12.47 kV before stepping down for customer use.
4. Which device is used to step down distribution voltage to residential
service voltage?
A. Recloser
B. Sectionalizer
C. Transformer
D. Capacitor bank
Transformers reduce high distribution voltages to the lower voltages
appropriate for residential or commercial use.
5. During hot stick use, which safety principle must be followed?
A. Always grip the stick with one hand
B. Use hot sticks only for grounding
C. Maintain proper distance to prevent electrical contact
D. Wet the tool before use
Hot sticks are insulated tools that provide distance from energized
parts to prevent electrical contact.
6. What is the first step when arriving at a reported outage scene?
A. Restore line immediately
B. Call the customer to diagnose
C. Assess the situation and ensure safety
D. Replace all poles in the area
Safety assessment and situational awareness are the first priorities
before any work begins.
7. Which PPE item is required when performing live-line work?
A. Cotton work gloves
B. Safety boots only
C. Insulated rubber gloves with leather protectors
D. Apron only
Insulated rubber gloves with leather protectors provide necessary
protection against electrical hazards.
8. What does OSHA stand for?
A. Operational Safety and Hazard Administration
, B. Organization for Safety and Health Accreditation
C. Occupational Safety and Health Administration
D. Office of Safety and Hazard Assessment
OSHA is the regulatory body that enforces workplace safety
standards, including electrical line work.
9. What is the purpose of a cutout fuse on a distribution line?
A. To step up voltage
B. To protect equipment by interrupting fault currents
C. To ground the system
D. To measure power factor
Cutout fuses protect equipment by opening the circuit during faults
to prevent damage.
10. Which tool is commonly used to tighten conductor clamps on
hardware?
A. Wire cutter
B. Insulated bucket
C. Torque wrench
D. Voltage detector
Torque wrenches ensure connectors are tightened to specified values
for safety and reliability.
11. What is the Danger Zone boundary distance for live-line
operation on a 7.2 kV circuit?
A. 5 inches
B. 12 inches
C. Varies based on voltage and OSHA standards
D. 24 feet
OSHA specifies minimum approach distances based on voltage; thus
the exact distance varies and must be referenced from standards.
12. Which conductor type is most often used in overhead
distribution?
A. Coaxial cable
B. Aluminum conductor steel reinforced (ACSR)
C. Copper telephone wire
D. Fiber optic
