Certified Power Lineman Journeyman
Licensing Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary purpose of a fuse in a power distribution
system?
a) To increase voltage
b) To reduce current
c) To protect equipment from overcurrent
d) To regulate frequency
Fuses are designed to break the circuit when current exceeds safe
levels, preventing damage to equipment and reducing fire risk.
2. Which type of conductor is most commonly used for overhead
distribution lines?
a) Copper-clad aluminum
b) Aluminum
c) Steel
d) Silver
Aluminum is preferred because it is lightweight, cost-effective, and
has good conductivity.
3. What is the standard voltage level for primary distribution lines in
many urban areas?
a) 120/240 V
b) 7,200 V to 34,500 V
, c) 120 V
d) 480 V
Primary distribution lines operate at medium voltages to
efficiently transmit power from substations to transformers.
4. When climbing a wooden utility pole, what is the most important
safety practice?
a) Wearing sunglasses
b) Using a proper climbing belt and pole climbers
c) Carrying tools in your hands
d) Only wearing work boots
Proper climbing equipment prevents falls and ensures hands are
free for work.
5. Which type of grounding is typically used to protect linemen from
electrical shock?
a) Water grounding
b) Neutral grounding
c) Personal protective grounding
d) Earth rod grounding
Personal protective grounding provides a safe path for fault
currents, protecting workers during line work.
6. The purpose of a transformer on a distribution line is to:
a) Increase voltage for long-distance transmission
b) Store electrical energy
c) Step voltage up or down for safe use
d) Convert AC to DC
Transformers adjust voltage levels to meet the needs of end-users
while minimizing losses.
7. What is the OSHA required minimum approach distance for 7,200
V to 34,500 V lines?
, a) 2 feet
b) 5 feet
c) 10 feet
d) 15 feet
OSHA defines minimum approach distances to prevent electrical
shock when working near energized lines.
8. Which of the following is a live-line tool used to safely work on
energized lines?
a) Screwdriver
b) Wrench
c) Hot stick
d) Pliers
A hot stick is an insulated tool that allows linemen to perform
work while keeping a safe distance from energized lines.
9. What is the main purpose of a cutout on a distribution line?
a) Increase voltage
b) Protect transformers and lines from overloads
c) Measure current
d) Convert AC to DC
Cutouts act like fuses or switches to interrupt power during faults,
protecting the system.
10. A lineman notices frayed strands on a climbing belt. What
should they do?
a) Ignore it
b) Use it only for short climbs
c) Replace it immediately
d) Tape it
Using damaged climbing gear is extremely dangerous and could
result in a serious fall.
Licensing Exam Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. What is the primary purpose of a fuse in a power distribution
system?
a) To increase voltage
b) To reduce current
c) To protect equipment from overcurrent
d) To regulate frequency
Fuses are designed to break the circuit when current exceeds safe
levels, preventing damage to equipment and reducing fire risk.
2. Which type of conductor is most commonly used for overhead
distribution lines?
a) Copper-clad aluminum
b) Aluminum
c) Steel
d) Silver
Aluminum is preferred because it is lightweight, cost-effective, and
has good conductivity.
3. What is the standard voltage level for primary distribution lines in
many urban areas?
a) 120/240 V
b) 7,200 V to 34,500 V
, c) 120 V
d) 480 V
Primary distribution lines operate at medium voltages to
efficiently transmit power from substations to transformers.
4. When climbing a wooden utility pole, what is the most important
safety practice?
a) Wearing sunglasses
b) Using a proper climbing belt and pole climbers
c) Carrying tools in your hands
d) Only wearing work boots
Proper climbing equipment prevents falls and ensures hands are
free for work.
5. Which type of grounding is typically used to protect linemen from
electrical shock?
a) Water grounding
b) Neutral grounding
c) Personal protective grounding
d) Earth rod grounding
Personal protective grounding provides a safe path for fault
currents, protecting workers during line work.
6. The purpose of a transformer on a distribution line is to:
a) Increase voltage for long-distance transmission
b) Store electrical energy
c) Step voltage up or down for safe use
d) Convert AC to DC
Transformers adjust voltage levels to meet the needs of end-users
while minimizing losses.
7. What is the OSHA required minimum approach distance for 7,200
V to 34,500 V lines?
, a) 2 feet
b) 5 feet
c) 10 feet
d) 15 feet
OSHA defines minimum approach distances to prevent electrical
shock when working near energized lines.
8. Which of the following is a live-line tool used to safely work on
energized lines?
a) Screwdriver
b) Wrench
c) Hot stick
d) Pliers
A hot stick is an insulated tool that allows linemen to perform
work while keeping a safe distance from energized lines.
9. What is the main purpose of a cutout on a distribution line?
a) Increase voltage
b) Protect transformers and lines from overloads
c) Measure current
d) Convert AC to DC
Cutouts act like fuses or switches to interrupt power during faults,
protecting the system.
10. A lineman notices frayed strands on a climbing belt. What
should they do?
a) Ignore it
b) Use it only for short climbs
c) Replace it immediately
d) Tape it
Using damaged climbing gear is extremely dangerous and could
result in a serious fall.
