NCCER Electrical Level 1 Exam 2026 May Update Verified
Questions & Answers (Core Curriculum) Most Asked 100 Questions
And Verified Answers | A+ Success Kit”
1. A new apprentice is asked to identify hazards before starting work in a workshop. What
is the first step they should take?
A. Begin work immediately
B. Review safety procedures
C. Ignore minor hazards
D. Wait for supervisor instructions
Answer: B. Review safety procedures
Reviewing safety procedures ensures awareness of potential risks and proper precautions
before starting work.
2. While working on a jobsite, a worker notices frayed insulation on a power cord. What
should they do?
A. Tape it and continue using
B. Ignore it
C. Report and replace it
D. Use only for light loads
Answer: C. Report and replace it
Damaged insulation can cause electric shock or fire and must be replaced immediately.
3. A worker is required to lift heavy materials repeatedly. What is the best method to
prevent injury?
A. Bend at the waist
B. Use back muscles
C. Lift with legs
D. Twist while lifting
Answer: C. Lift with legs
Using leg muscles reduces strain on the back and prevents injury.
4. Which organization sets safety standards for workplace safety?
A. NEC
B. OSHA
C. NFPA
D. ANSI
Answer: B. OSHA
OSHA establishes and enforces workplace safety regulations.
5. What is the primary purpose of PPE?
A. Improve speed
B. Increase efficiency
C. Protect workers
D. Reduce costs
Answer: C. Protect workers
Personal Protective Equipment reduces exposure to hazards.
6. A worker must climb a ladder to reach a panel. What is the safest practice?
A. Stand on top rung
, B. Lean ladder steeply
C. Maintain three points of contact
D. Carry tools in hands
Answer: C. Maintain three points of contact
This ensures stability and reduces fall risk.
7. What should be done before working on electrical circuits?
A. Wear gloves only
B. Turn off power and lockout
C. Use insulated tools only
D. Work quickly
Answer: B. Turn off power and lockout
Lockout/tagout ensures circuits are de-energized.
8. A fire starts in an electrical panel. Which extinguisher should be used?
A. Class A
B. Class B
C. Class C
D. Water
Answer: C. Class C
Class C extinguishers are designed for electrical fires.
9. What is the correct response to an electrical shock victim?
A. Touch them immediately
B. Shut off power first
C. Pour water
D. Ignore if conscious
Answer: B. Shut off power first
Cutting power prevents further injury.
10. What is the safest way to carry tools on a ladder?
A. In hands
B. In pockets
C. Use tool belt
D. Throw them up
Answer: C. Use tool belt
This keeps hands free for safe climbing.
11. Which tool is used to measure voltage?
A. Ammeter
B. Voltmeter
C. Ohmmeter
D. Clamp meter
Answer: B. Voltmeter
Voltmeters measure electrical potential difference.
12. Which tool is used to cut conduit?
A. Hammer
B. Hacksaw
C. Screwdriver
D. Pliers
, Answer: B. Hacksaw
Hacksaws are commonly used for cutting metal conduit.
13. What tool is used to tighten bolts?
A. Chisel
B. Wrench
C. File
D. Saw
Answer: B. Wrench
Wrenches apply torque to fasteners.
14. Which measuring tool ensures a surface is horizontal?
A. Tape measure
B. Square
C. Level
D. Caliper
Answer: C. Level
A level checks alignment relative to gravity.
15. What is the purpose of a multimeter?
A. Cut wires
B. Measure electrical values
C. Drill holes
D. Hold wires
Answer: B. Measure electrical values
A multimeter measures voltage, current, and resistance.
16. What is electricity?
A. Flow of neutrons
B. Flow of electrons
C. Flow of protons
D. Static charge
Answer: B. Flow of electrons
Electric current is the movement of electrons.
17. What unit measures current?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: B. Ampere
Current is measured in amperes.
18. What unit measures resistance?
A. Volt
B. Amp
C. Ohm
D. Watt
Answer: C. Ohm
Resistance opposes current flow.
19. What does a conductor do?
A. Blocks current
Questions & Answers (Core Curriculum) Most Asked 100 Questions
And Verified Answers | A+ Success Kit”
1. A new apprentice is asked to identify hazards before starting work in a workshop. What
is the first step they should take?
A. Begin work immediately
B. Review safety procedures
C. Ignore minor hazards
D. Wait for supervisor instructions
Answer: B. Review safety procedures
Reviewing safety procedures ensures awareness of potential risks and proper precautions
before starting work.
2. While working on a jobsite, a worker notices frayed insulation on a power cord. What
should they do?
A. Tape it and continue using
B. Ignore it
C. Report and replace it
D. Use only for light loads
Answer: C. Report and replace it
Damaged insulation can cause electric shock or fire and must be replaced immediately.
3. A worker is required to lift heavy materials repeatedly. What is the best method to
prevent injury?
A. Bend at the waist
B. Use back muscles
C. Lift with legs
D. Twist while lifting
Answer: C. Lift with legs
Using leg muscles reduces strain on the back and prevents injury.
4. Which organization sets safety standards for workplace safety?
A. NEC
B. OSHA
C. NFPA
D. ANSI
Answer: B. OSHA
OSHA establishes and enforces workplace safety regulations.
5. What is the primary purpose of PPE?
A. Improve speed
B. Increase efficiency
C. Protect workers
D. Reduce costs
Answer: C. Protect workers
Personal Protective Equipment reduces exposure to hazards.
6. A worker must climb a ladder to reach a panel. What is the safest practice?
A. Stand on top rung
, B. Lean ladder steeply
C. Maintain three points of contact
D. Carry tools in hands
Answer: C. Maintain three points of contact
This ensures stability and reduces fall risk.
7. What should be done before working on electrical circuits?
A. Wear gloves only
B. Turn off power and lockout
C. Use insulated tools only
D. Work quickly
Answer: B. Turn off power and lockout
Lockout/tagout ensures circuits are de-energized.
8. A fire starts in an electrical panel. Which extinguisher should be used?
A. Class A
B. Class B
C. Class C
D. Water
Answer: C. Class C
Class C extinguishers are designed for electrical fires.
9. What is the correct response to an electrical shock victim?
A. Touch them immediately
B. Shut off power first
C. Pour water
D. Ignore if conscious
Answer: B. Shut off power first
Cutting power prevents further injury.
10. What is the safest way to carry tools on a ladder?
A. In hands
B. In pockets
C. Use tool belt
D. Throw them up
Answer: C. Use tool belt
This keeps hands free for safe climbing.
11. Which tool is used to measure voltage?
A. Ammeter
B. Voltmeter
C. Ohmmeter
D. Clamp meter
Answer: B. Voltmeter
Voltmeters measure electrical potential difference.
12. Which tool is used to cut conduit?
A. Hammer
B. Hacksaw
C. Screwdriver
D. Pliers
, Answer: B. Hacksaw
Hacksaws are commonly used for cutting metal conduit.
13. What tool is used to tighten bolts?
A. Chisel
B. Wrench
C. File
D. Saw
Answer: B. Wrench
Wrenches apply torque to fasteners.
14. Which measuring tool ensures a surface is horizontal?
A. Tape measure
B. Square
C. Level
D. Caliper
Answer: C. Level
A level checks alignment relative to gravity.
15. What is the purpose of a multimeter?
A. Cut wires
B. Measure electrical values
C. Drill holes
D. Hold wires
Answer: B. Measure electrical values
A multimeter measures voltage, current, and resistance.
16. What is electricity?
A. Flow of neutrons
B. Flow of electrons
C. Flow of protons
D. Static charge
Answer: B. Flow of electrons
Electric current is the movement of electrons.
17. What unit measures current?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: B. Ampere
Current is measured in amperes.
18. What unit measures resistance?
A. Volt
B. Amp
C. Ohm
D. Watt
Answer: C. Ohm
Resistance opposes current flow.
19. What does a conductor do?
A. Blocks current
