LADWP ELECTRICAL CRAFT HELPER
ELECTRICAL SAFETY EXAM WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. A crew is preparing to work inside an electrical cabinet. The
disconnect has been switched OFF, but no lock or tag has been
applied. What is the safest assumption regarding the circuit?
A. The circuit is safe because the disconnect is visibly in the OFF
position.
B. The circuit is safe if a coworker says nobody has energized it.
C. The circuit should be treated as energized until proper deenergization
and verification procedures have been completed.
D. The circuit is safe if the equipment's indicator light is off.
Answer: C.
Rationale: A switch being in the OFF position does not by itself
establish a verified electrically safe condition. Proper procedures
require the energy source to be isolated and the absence of voltage
verified with appropriate test equipment by a properly qualified person.
OSHA specifically emphasizes verification of deenergization before
work begins.
2. What is the primary purpose of lockout/tagout when electrical
equipment is being serviced?
1
,A. To identify the employee's department
B. To prevent unexpected energization or release of hazardous energy
C. To make equipment easier to troubleshoot
D. To indicate that maintenance has already been completed
Answer: B.
Rationale: Lockout/tagout is an energy-control procedure designed to
prevent equipment from being unexpectedly energized or hazardous
energy from being released while servicing or maintenance is
performed. Electrical work may require additional electrical-specific
procedures as well.
3. An Electrical Craft Helper notices that an extension cord has
exposed copper conductors near the plug. The cord is still
functioning normally. What should the helper do?
A. Wrap the exposed area with ordinary electrical tape and continue
using it.
B. Use the cord only for low-voltage equipment.
C. Remove the cord from service and report the defect according to
procedure.
D. Use the cord only if it is kept off the ground.
Answer: C.
Rationale: Exposed conductors create shock, short-circuit, and fire
hazards. A defective electrical cord should not be improvised into
service with a temporary repair unless an authorized repair procedure
specifically permits it. Damaged electrical equipment should be
removed from service and properly repaired or replaced.
4. Why is electrical current particularly dangerous to the human
body?
2
,A. It always causes immediate burns.
B. It can interfere with normal nerve, muscle, and cardiac function.
C. It permanently magnetizes the body.
D. It only damages the skin.
Answer: B.
Rationale: Electrical current can cause involuntary muscle
contraction, respiratory interference, burns, neurological injury, and
potentially fatal cardiac disturbances. The severity depends on factors
including current magnitude, duration, pathway through the body,
and environmental conditions.
5. A worker is standing on a wet concrete floor while handling an
electrical cord. Why is this situation especially hazardous?
A. Wet concrete increases the resistance of the body.
B. Water can reduce electrical resistance and provide a better path for
current through the body.
C. Concrete completely prevents current flow.
D. Moisture only creates a slipping hazard and has no electrical
significance.
Answer: B.
Rationale: Moisture can substantially reduce the resistance between a
person and ground. Lower resistance can allow greater current to flow
through the body for a given voltage, increasing the severity of an
electrical shock.
6. Which condition provides the strongest reason to stop electrical
work immediately?
3
, A. The work is taking longer than expected.
B. A required protective device is unavailable or defective.
C. The equipment is located indoors.
D. The work requires two employees.
Answer: B.
Rationale: Electrical work should not proceed when required
protective equipment, procedures, or safeguards are missing or
defective. Continuing under uncontrolled conditions can expose
workers to shock, arc-flash, fire, and other hazards. OSHA guidance
emphasizes stopping work when electrical hazards are identified and
appropriate controls are not in place.
7. What is the main function of a circuit breaker in an electrical
system?
A. To increase circuit voltage
B. To provide a convenient place to connect tools
C. To interrupt current when an abnormal overcurrent condition occurs
D. To eliminate all electrical shock hazards
Answer: C.
Rationale: Circuit breakers are overcurrent protective devices designed
to interrupt excessive current under specified conditions. They do not
eliminate every electrical hazard; for example, equipment can remain
energized even when current is below the breaker's trip level.
8. A circuit breaker trips repeatedly after a motor is started. What
is the safest action?
A. Replace the breaker with a larger one immediately.
B. Hold the breaker closed while the motor runs.
4
ELECTRICAL SAFETY EXAM WITH ACTUAL
QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT
VERIFIED FOR GUARANTEED 100% PASS
2026/LATEST UPDATE/INSTANT
DOWNLOAD PDF
1. A crew is preparing to work inside an electrical cabinet. The
disconnect has been switched OFF, but no lock or tag has been
applied. What is the safest assumption regarding the circuit?
A. The circuit is safe because the disconnect is visibly in the OFF
position.
B. The circuit is safe if a coworker says nobody has energized it.
C. The circuit should be treated as energized until proper deenergization
and verification procedures have been completed.
D. The circuit is safe if the equipment's indicator light is off.
Answer: C.
Rationale: A switch being in the OFF position does not by itself
establish a verified electrically safe condition. Proper procedures
require the energy source to be isolated and the absence of voltage
verified with appropriate test equipment by a properly qualified person.
OSHA specifically emphasizes verification of deenergization before
work begins.
2. What is the primary purpose of lockout/tagout when electrical
equipment is being serviced?
1
,A. To identify the employee's department
B. To prevent unexpected energization or release of hazardous energy
C. To make equipment easier to troubleshoot
D. To indicate that maintenance has already been completed
Answer: B.
Rationale: Lockout/tagout is an energy-control procedure designed to
prevent equipment from being unexpectedly energized or hazardous
energy from being released while servicing or maintenance is
performed. Electrical work may require additional electrical-specific
procedures as well.
3. An Electrical Craft Helper notices that an extension cord has
exposed copper conductors near the plug. The cord is still
functioning normally. What should the helper do?
A. Wrap the exposed area with ordinary electrical tape and continue
using it.
B. Use the cord only for low-voltage equipment.
C. Remove the cord from service and report the defect according to
procedure.
D. Use the cord only if it is kept off the ground.
Answer: C.
Rationale: Exposed conductors create shock, short-circuit, and fire
hazards. A defective electrical cord should not be improvised into
service with a temporary repair unless an authorized repair procedure
specifically permits it. Damaged electrical equipment should be
removed from service and properly repaired or replaced.
4. Why is electrical current particularly dangerous to the human
body?
2
,A. It always causes immediate burns.
B. It can interfere with normal nerve, muscle, and cardiac function.
C. It permanently magnetizes the body.
D. It only damages the skin.
Answer: B.
Rationale: Electrical current can cause involuntary muscle
contraction, respiratory interference, burns, neurological injury, and
potentially fatal cardiac disturbances. The severity depends on factors
including current magnitude, duration, pathway through the body,
and environmental conditions.
5. A worker is standing on a wet concrete floor while handling an
electrical cord. Why is this situation especially hazardous?
A. Wet concrete increases the resistance of the body.
B. Water can reduce electrical resistance and provide a better path for
current through the body.
C. Concrete completely prevents current flow.
D. Moisture only creates a slipping hazard and has no electrical
significance.
Answer: B.
Rationale: Moisture can substantially reduce the resistance between a
person and ground. Lower resistance can allow greater current to flow
through the body for a given voltage, increasing the severity of an
electrical shock.
6. Which condition provides the strongest reason to stop electrical
work immediately?
3
, A. The work is taking longer than expected.
B. A required protective device is unavailable or defective.
C. The equipment is located indoors.
D. The work requires two employees.
Answer: B.
Rationale: Electrical work should not proceed when required
protective equipment, procedures, or safeguards are missing or
defective. Continuing under uncontrolled conditions can expose
workers to shock, arc-flash, fire, and other hazards. OSHA guidance
emphasizes stopping work when electrical hazards are identified and
appropriate controls are not in place.
7. What is the main function of a circuit breaker in an electrical
system?
A. To increase circuit voltage
B. To provide a convenient place to connect tools
C. To interrupt current when an abnormal overcurrent condition occurs
D. To eliminate all electrical shock hazards
Answer: C.
Rationale: Circuit breakers are overcurrent protective devices designed
to interrupt excessive current under specified conditions. They do not
eliminate every electrical hazard; for example, equipment can remain
energized even when current is below the breaker's trip level.
8. A circuit breaker trips repeatedly after a motor is started. What
is the safest action?
A. Replace the breaker with a larger one immediately.
B. Hold the breaker closed while the motor runs.
4
