NFPA 70E Electrical Safety in the
Workplace Exam Questions and Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf.
1. What is the primary purpose of NFPA 70E?
A. To establish building construction standards
B. To provide requirements for electrical safety in the workplace
C. To regulate electrical utility generation systems
D. To establish electrical equipment manufacturing standards
Rationale: NFPA 70E is intended to reduce the risk of electrical injuries
by providing practical workplace safety requirements for employees
working on or near energized electrical equipment. It focuses on
protecting workers from electric shock, arc flash, and arc blast hazards
rather than governing electrical installation requirements.
2. Which hazard is most commonly associated with severe burns
during an electrical incident?
A. Electric shock only
B. Static electricity
,C. Arc flash
D. Ground fault interruption
Rationale: An arc flash produces extremely high temperatures, intense
radiant energy, molten metal, and pressure waves capable of causing
catastrophic burns. While electric shock can be fatal, arc flash is the
leading cause of severe thermal injuries in electrical workplaces.
3. Before an employee begins work on electrical equipment, the
employer should first ensure that:
A. The equipment is painted
B. The employee owns insulated tools
C. An electrical safety program has been implemented
D. Lockout devices are color coded
Rationale: NFPA 70E requires employers to establish and implement a
documented electrical safety program. The program includes hazard
identification, employee responsibilities, training, risk assessments, and
procedures for safe work practices.
4. Which of the following best describes an electrically safe work
condition?
A. Equipment operating below rated voltage
B. Equipment connected to standby power
C. Equipment protected by fuses
D. Equipment that has been disconnected, locked out, verified de-
energized, and grounded where necessary
,Rationale: An electrically safe work condition requires disconnecting all
energy sources, applying lockout/tagout, verifying absence of voltage
using appropriate instruments, and applying grounding where
necessary before work begins.
5. What should always be performed before working on energized
electrical equipment?
A. Equipment repainting
B. Ground resistance testing
C. Risk assessment
D. Cable replacement
Rationale: NFPA 70E requires a risk assessment to identify electrical
hazards, estimate the likelihood and severity of injury, and determine
appropriate protective measures before work begins.
6. Which hazard involves current passing through the human body?
A. Arc blast
B. Thermal radiation
C. Electric shock
D. Electromagnetic interference
Rationale: Electric shock occurs when electrical current flows through
the body, potentially causing burns, cardiac arrest, respiratory failure, or
death depending on current magnitude, duration, and path.
, 7. What is the minimum action required before verifying absence of
voltage?
A. Wear cotton gloves only
B. Remove all PPE
C. Use appropriate lockout/tagout procedures
D. Disconnect the neutral conductor only
Rationale: Lockout/tagout isolates hazardous energy sources before
testing. Verification of absence of voltage is performed only after proper
isolation procedures have been completed.
8. Why is voltage testing performed after lockout/tagout?
A. To verify fuse ratings
B. To confirm equipment is actually de-energized
C. To measure power quality
D. To identify wire colors
Rationale: Isolation devices can fail or be incorrectly operated. Voltage
testing confirms the equipment is truly de-energized before employees
begin work.
9. What document identifies electrical hazards and required PPE for
specific equipment?
A. Building permit
B. Maintenance log
C. Arc flash label
D. Equipment warranty
Workplace Exam Questions and Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf.
1. What is the primary purpose of NFPA 70E?
A. To establish building construction standards
B. To provide requirements for electrical safety in the workplace
C. To regulate electrical utility generation systems
D. To establish electrical equipment manufacturing standards
Rationale: NFPA 70E is intended to reduce the risk of electrical injuries
by providing practical workplace safety requirements for employees
working on or near energized electrical equipment. It focuses on
protecting workers from electric shock, arc flash, and arc blast hazards
rather than governing electrical installation requirements.
2. Which hazard is most commonly associated with severe burns
during an electrical incident?
A. Electric shock only
B. Static electricity
,C. Arc flash
D. Ground fault interruption
Rationale: An arc flash produces extremely high temperatures, intense
radiant energy, molten metal, and pressure waves capable of causing
catastrophic burns. While electric shock can be fatal, arc flash is the
leading cause of severe thermal injuries in electrical workplaces.
3. Before an employee begins work on electrical equipment, the
employer should first ensure that:
A. The equipment is painted
B. The employee owns insulated tools
C. An electrical safety program has been implemented
D. Lockout devices are color coded
Rationale: NFPA 70E requires employers to establish and implement a
documented electrical safety program. The program includes hazard
identification, employee responsibilities, training, risk assessments, and
procedures for safe work practices.
4. Which of the following best describes an electrically safe work
condition?
A. Equipment operating below rated voltage
B. Equipment connected to standby power
C. Equipment protected by fuses
D. Equipment that has been disconnected, locked out, verified de-
energized, and grounded where necessary
,Rationale: An electrically safe work condition requires disconnecting all
energy sources, applying lockout/tagout, verifying absence of voltage
using appropriate instruments, and applying grounding where
necessary before work begins.
5. What should always be performed before working on energized
electrical equipment?
A. Equipment repainting
B. Ground resistance testing
C. Risk assessment
D. Cable replacement
Rationale: NFPA 70E requires a risk assessment to identify electrical
hazards, estimate the likelihood and severity of injury, and determine
appropriate protective measures before work begins.
6. Which hazard involves current passing through the human body?
A. Arc blast
B. Thermal radiation
C. Electric shock
D. Electromagnetic interference
Rationale: Electric shock occurs when electrical current flows through
the body, potentially causing burns, cardiac arrest, respiratory failure, or
death depending on current magnitude, duration, and path.
, 7. What is the minimum action required before verifying absence of
voltage?
A. Wear cotton gloves only
B. Remove all PPE
C. Use appropriate lockout/tagout procedures
D. Disconnect the neutral conductor only
Rationale: Lockout/tagout isolates hazardous energy sources before
testing. Verification of absence of voltage is performed only after proper
isolation procedures have been completed.
8. Why is voltage testing performed after lockout/tagout?
A. To verify fuse ratings
B. To confirm equipment is actually de-energized
C. To measure power quality
D. To identify wire colors
Rationale: Isolation devices can fail or be incorrectly operated. Voltage
testing confirms the equipment is truly de-energized before employees
begin work.
9. What document identifies electrical hazards and required PPE for
specific equipment?
A. Building permit
B. Maintenance log
C. Arc flash label
D. Equipment warranty
