South Carolina Lineworker Apprentice
Certification License Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. A lineworker must perform a pre-job hazard analysis (PJHA) before
beginning any task. What is the primary purpose of a PJHA?
A. To estimate job completion time
B. To identify and mitigate hazards before work begins
C. To calculate material costs
D. To satisfy administrative reporting requirements
Rationale: The primary purpose of a PJHA is to systematically identify
potential hazards and plan controls to reduce risk before starting a
job._
2. Which of the following personal protective equipment (PPE) is
mandatory when climbing a utility pole?
A. Safety glasses only
B. Standard work gloves only
C. Climbing belt and hooks
D. Ear protection only
Rationale: A climbing belt with hooks is mandatory for safe
ascending and descending of utility poles to prevent falls._
,3. What does the term “NFPA 70E” refer to in the context of electrical
safety?
A. Standard for electrical safety in the workplace
B. A type of voltage regulator
C. A specification for grounding rods
D. A brand of insulating gloves
Rationale: NFPA 70E is a standard outlining electrical safety
requirements to protect workers from electrical hazards._
4. In distribution systems, what is the typical voltage classification for a
primary feeder?
A. 120/240 V
B. 480 V
C. 12,470 V
D. 600 V
Rationale: Many overhead primary distribution systems use voltages
such as 12.47 kV for feeder circuits._
5. When installing a grounding system, what is the minimum resistance to
earth that most utilities aim to achieve for effective grounding?
A. 50 ohms
B. 25 ohms
C. 5 ohms
D. 0.1 ohms
Rationale: A resistance of 5 ohms or less is a common industry target
to ensure efficient dissipation of fault current._
6. What tool is used to tighten a compression connector on a copper
conductor?
A. Torque wrench
B. Adjustable pliers
C. Hydraulic crimper
, D. Manual screwdriver
Rationale: Hydraulic crimpers provide the force needed to properly
compress connectors on large conductors._
7. While working near energized lines, maintaining the proper minimum
approach distance (MAD) is critical. What factor primarily determines
the MAD?
A. Worker height
B. System voltage
C. Conductor material
D. Weather conditions
Rationale: The system voltage determines the required minimum
approach distance due to increased electrical arc risk at higher
voltages._
8. What device is typically installed on a pole to protect transformers
from overcurrent events?
A. Surge arrester
B. Fuse cutout
C. Tap changer
D. Load break elbow
Rationale: Fuse cutouts are protective devices used to interrupt fault
current and protect transformers and lines._
9. When changing out a crossarm, the lineworker should always:
A. Stand on the pole with no safety gear
B. Use appropriate climbing PPE and secure the pole
C. Work only from a bucket truck without fall protection
D. Assume the line is de-energized without testing
Rationale: Proper climbing PPE and securing the pole are essential to
prevent falls and ensure worker safety._
Certification License Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. A lineworker must perform a pre-job hazard analysis (PJHA) before
beginning any task. What is the primary purpose of a PJHA?
A. To estimate job completion time
B. To identify and mitigate hazards before work begins
C. To calculate material costs
D. To satisfy administrative reporting requirements
Rationale: The primary purpose of a PJHA is to systematically identify
potential hazards and plan controls to reduce risk before starting a
job._
2. Which of the following personal protective equipment (PPE) is
mandatory when climbing a utility pole?
A. Safety glasses only
B. Standard work gloves only
C. Climbing belt and hooks
D. Ear protection only
Rationale: A climbing belt with hooks is mandatory for safe
ascending and descending of utility poles to prevent falls._
,3. What does the term “NFPA 70E” refer to in the context of electrical
safety?
A. Standard for electrical safety in the workplace
B. A type of voltage regulator
C. A specification for grounding rods
D. A brand of insulating gloves
Rationale: NFPA 70E is a standard outlining electrical safety
requirements to protect workers from electrical hazards._
4. In distribution systems, what is the typical voltage classification for a
primary feeder?
A. 120/240 V
B. 480 V
C. 12,470 V
D. 600 V
Rationale: Many overhead primary distribution systems use voltages
such as 12.47 kV for feeder circuits._
5. When installing a grounding system, what is the minimum resistance to
earth that most utilities aim to achieve for effective grounding?
A. 50 ohms
B. 25 ohms
C. 5 ohms
D. 0.1 ohms
Rationale: A resistance of 5 ohms or less is a common industry target
to ensure efficient dissipation of fault current._
6. What tool is used to tighten a compression connector on a copper
conductor?
A. Torque wrench
B. Adjustable pliers
C. Hydraulic crimper
, D. Manual screwdriver
Rationale: Hydraulic crimpers provide the force needed to properly
compress connectors on large conductors._
7. While working near energized lines, maintaining the proper minimum
approach distance (MAD) is critical. What factor primarily determines
the MAD?
A. Worker height
B. System voltage
C. Conductor material
D. Weather conditions
Rationale: The system voltage determines the required minimum
approach distance due to increased electrical arc risk at higher
voltages._
8. What device is typically installed on a pole to protect transformers
from overcurrent events?
A. Surge arrester
B. Fuse cutout
C. Tap changer
D. Load break elbow
Rationale: Fuse cutouts are protective devices used to interrupt fault
current and protect transformers and lines._
9. When changing out a crossarm, the lineworker should always:
A. Stand on the pole with no safety gear
B. Use appropriate climbing PPE and secure the pole
C. Work only from a bucket truck without fall protection
D. Assume the line is de-energized without testing
Rationale: Proper climbing PPE and securing the pole are essential to
prevent falls and ensure worker safety._
