Certified Power Lineman Journeyman Licensing Exam
Practice Test Questions and Correct Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download PDF
Welcome to this comprehensive Certified Power Lineman Journeyman Licensing Exam practice test review.
This resource contains 200 exam-style questions covering electrical theory, safety and OSHA regulations,
distribution equipment, pole construction and rigging, tool and equipment operation, overhead and
underground distribution systems, codes and standards, troubleshooting, and emergency procedures. Each
question includes the correct answer (in italics) and a short rationale (≤3 lines). Use this exam to prepare for
your journeyman licensing exam and strengthen your power lineman knowledge.
Key Topics Covered
• Electrical Theory & Systems – Ohm's Law, AC/DC circuits, power calculations (watts, kVA, kW), three-
phase systems (wye/delta), voltage regulation, transformer connections
• Safety & OSHA Regulations – Minimum approach distances, personal protective grounding,
lockout/tagout, arc flash PPE, step/touch potential, pole-top rescue
• Distribution Equipment – Transformers (single/three-phase), circuit breakers, fuses, capacitor banks,
load break switches, sectionalizers, reclosers
• Pole Construction & Rigging – Pole step spacing, guy wire tension, lifting sling angles, block and tackle
calculations, rope knots
• Tool & Equipment Operation – Hot sticks, clamp-on ammeters, phase indicators, multimeters,
megohmmeters
• Overhead Distribution Systems – Conductor stringing and sag calculations, insulator types, pole guying,
dead-end structures
• Underground Distribution Systems – URD cable installation, pulling tension calculations, fault location,
terminations, conduit fill
• Codes & Standards – OSHA 1910.269, NESC (National Electrical Safety Code), ANSI standards
,• Troubleshooting & Fault Detection – Phase indicators, fault indicators, thumper operations, fault current
analysis
• Emergency Procedures – Pole-top rescue, first aid/CPR, electrical accident response
Questions 1–200
1. What is the current in amperes when a 240 V load draws 12 kW of real power at unity power
factor?
A) 25 A
B) 30 A
C) 50 A
D) 100 A
Answer C: 50 A
Rationale: P = V × I → I = 12,000 W ÷ 240 V = 50 A.
2. What is the primary purpose of a fuse in a power system?
A) Increase voltage
B) Store electrical energy
C) Protect circuits from overcurrent
D) Regulate frequency
Answer C: Protect circuits from overcurrent
Rationale: A fuse interrupts excessive current to prevent damage to equipment and wiring.
3. Which unit measures electrical current?
A) Volt
B) Ohm
C) Watt
D) Ampere
Answer D: Ampere
Rationale: Amperes measure the flow of electric charge.
4. What tool is used to measure voltage in a circuit?
A) Clamp meter
,B) Ohmmeter
C) Voltmeter
D) Tachometer
Answer C: Voltmeter
Rationale: A voltmeter measures electrical potential difference.
5. What is the function of a transformer?
A) Store energy
B) Convert AC to DC
C) Change voltage levels
D) Increase resistance
Answer C: Change voltage levels
Rationale: Transformers step voltage up or down in AC systems.
6. What type of current flows in one direction only?
A) AC
B) DC
C) Polyphase
D) Alternating pulse
Answer B: DC
Rationale: Direct current flows in a single direction.
7. What is the standard frequency of power systems in North America?
A) 25 Hz
B) 40 Hz
C) 60 Hz
D) 100 Hz
Answer C: 60 Hz
Rationale: North American grids operate at 60 Hz.
8. What safety device is used to protect linemen from electrical shock?
A) Rubber boots
, B) Hard hat
C) Insulated gloves
D) Safety glasses
Answer C: Insulated gloves
Rationale: Insulated gloves reduce risk of electrical contact injury.
9. What does PPE stand for?
A) Power Protection Equipment
B) Primary Power Engine
C) Personal Protective Equipment
D) Protective Power Element
Answer C: Personal Protective Equipment
Rationale: PPE refers to gear used to protect workers from hazards.
10. What is the primary purpose of a grounding system?
A) Increase voltage
B) Provide a return path for current
C) Store electrical energy
D) Reduce resistance
Answer B: Provide a return path for current
Rationale: Grounding provides a safe return path for fault current, protecting equipment and personnel.
11. Which tool is commonly used to measure current in a live conductor without direct contact?
A) Megohmmeter
B) Clamp-on ammeter
C) Ohmmeter
D) Phase rotation meter
Answer B: Clamp-on ammeter
Rationale: A clamp-on ammeter measures current by sensing the magnetic field around a conductor.
12. What does OSHA primarily regulate in utility line work?
A) Equipment pricing
Practice Test Questions and Correct Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download PDF
Welcome to this comprehensive Certified Power Lineman Journeyman Licensing Exam practice test review.
This resource contains 200 exam-style questions covering electrical theory, safety and OSHA regulations,
distribution equipment, pole construction and rigging, tool and equipment operation, overhead and
underground distribution systems, codes and standards, troubleshooting, and emergency procedures. Each
question includes the correct answer (in italics) and a short rationale (≤3 lines). Use this exam to prepare for
your journeyman licensing exam and strengthen your power lineman knowledge.
Key Topics Covered
• Electrical Theory & Systems – Ohm's Law, AC/DC circuits, power calculations (watts, kVA, kW), three-
phase systems (wye/delta), voltage regulation, transformer connections
• Safety & OSHA Regulations – Minimum approach distances, personal protective grounding,
lockout/tagout, arc flash PPE, step/touch potential, pole-top rescue
• Distribution Equipment – Transformers (single/three-phase), circuit breakers, fuses, capacitor banks,
load break switches, sectionalizers, reclosers
• Pole Construction & Rigging – Pole step spacing, guy wire tension, lifting sling angles, block and tackle
calculations, rope knots
• Tool & Equipment Operation – Hot sticks, clamp-on ammeters, phase indicators, multimeters,
megohmmeters
• Overhead Distribution Systems – Conductor stringing and sag calculations, insulator types, pole guying,
dead-end structures
• Underground Distribution Systems – URD cable installation, pulling tension calculations, fault location,
terminations, conduit fill
• Codes & Standards – OSHA 1910.269, NESC (National Electrical Safety Code), ANSI standards
,• Troubleshooting & Fault Detection – Phase indicators, fault indicators, thumper operations, fault current
analysis
• Emergency Procedures – Pole-top rescue, first aid/CPR, electrical accident response
Questions 1–200
1. What is the current in amperes when a 240 V load draws 12 kW of real power at unity power
factor?
A) 25 A
B) 30 A
C) 50 A
D) 100 A
Answer C: 50 A
Rationale: P = V × I → I = 12,000 W ÷ 240 V = 50 A.
2. What is the primary purpose of a fuse in a power system?
A) Increase voltage
B) Store electrical energy
C) Protect circuits from overcurrent
D) Regulate frequency
Answer C: Protect circuits from overcurrent
Rationale: A fuse interrupts excessive current to prevent damage to equipment and wiring.
3. Which unit measures electrical current?
A) Volt
B) Ohm
C) Watt
D) Ampere
Answer D: Ampere
Rationale: Amperes measure the flow of electric charge.
4. What tool is used to measure voltage in a circuit?
A) Clamp meter
,B) Ohmmeter
C) Voltmeter
D) Tachometer
Answer C: Voltmeter
Rationale: A voltmeter measures electrical potential difference.
5. What is the function of a transformer?
A) Store energy
B) Convert AC to DC
C) Change voltage levels
D) Increase resistance
Answer C: Change voltage levels
Rationale: Transformers step voltage up or down in AC systems.
6. What type of current flows in one direction only?
A) AC
B) DC
C) Polyphase
D) Alternating pulse
Answer B: DC
Rationale: Direct current flows in a single direction.
7. What is the standard frequency of power systems in North America?
A) 25 Hz
B) 40 Hz
C) 60 Hz
D) 100 Hz
Answer C: 60 Hz
Rationale: North American grids operate at 60 Hz.
8. What safety device is used to protect linemen from electrical shock?
A) Rubber boots
, B) Hard hat
C) Insulated gloves
D) Safety glasses
Answer C: Insulated gloves
Rationale: Insulated gloves reduce risk of electrical contact injury.
9. What does PPE stand for?
A) Power Protection Equipment
B) Primary Power Engine
C) Personal Protective Equipment
D) Protective Power Element
Answer C: Personal Protective Equipment
Rationale: PPE refers to gear used to protect workers from hazards.
10. What is the primary purpose of a grounding system?
A) Increase voltage
B) Provide a return path for current
C) Store electrical energy
D) Reduce resistance
Answer B: Provide a return path for current
Rationale: Grounding provides a safe return path for fault current, protecting equipment and personnel.
11. Which tool is commonly used to measure current in a live conductor without direct contact?
A) Megohmmeter
B) Clamp-on ammeter
C) Ohmmeter
D) Phase rotation meter
Answer B: Clamp-on ammeter
Rationale: A clamp-on ammeter measures current by sensing the magnetic field around a conductor.
12. What does OSHA primarily regulate in utility line work?
A) Equipment pricing
