LADWP ELECTRICAL CRAFT HELPER EXAM WITH
ACTUAL QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT VERIFIED
FOR GUARANTEED 100% PASS 2026/2027
LATEST UPDATE
SECTION 1: SAFETY, PPE & HAZARD RECOGNITION (Questions 1–50)
1. A helper arrives at a job site and notices that the rubber insulating gloves
provided are sticky on the inside. What should the helper do?
A. Wear them anyway as they are only sticky
B. Powder them with talc and wear them
C. Remove them from service and report the condition
D. Wash them with soap and water and continue
Correct Answer: C
Rationale: Sticky or tacky rubber indicates chemical degradation or ozone attack,
compromising dielectric integrity. The gloves must be removed from service and
reported. Powdering (B) or washing (D) does not fix the degradation. Wearing them (A)
is unsafe.
2. What is the minimum distance a helper must maintain from an energized
overhead conductor rated at 50,000 volts?
A. 5 feet
B. 10 feet
C. 15 feet
D. 20 feet
Correct Answer: B
Rationale: OSHA requires 10 feet of clearance for voltages up to 50kV. For each
additional 10kV above 50kV, add 4 inches. 5 feet (A) is too close. 15 feet (C) and 20 feet
(D) are for higher voltages or transmission lines.
,3. A helper observes water pooling around a pad-mounted transformer. What is
the primary concern?
A. The water may cause rust
B. The transformer may be energized through water
C. The water may attract insects
D. The transformer may overheat
Correct Answer: B
Rationale: Water pooling around energized equipment creates a shock hazard as it may
be energized. Rust (A) and insects (C) are secondary. Overheating (D) is not the primary
safety concern.
4. Which of the following is an example of "administrative control" for electrical
safety?
A. Rubber insulating gloves
B. Lockout/Tagout procedures
C. Arc-rated clothing
D. Insulated tools
Correct Answer: B
Rationale: Administrative controls are policies, procedures, and training (LOTO, permits,
work procedures). Gloves (A), arc-rated clothing (C), and insulated tools (D) are
engineering/PPE controls.
5. The "one-hand rule" in electrical work recommends:
A. Using both hands for stability
B. Keeping one hand in your pocket when working on live circuits
C. Using two hands for better control
D. Always wearing gloves on both hands
Correct Answer: B
Rationale: The one-hand rule reduces the risk of current passing through the heart
,(hand-to-hand path). Keeping one hand in your pocket minimizes this risk. Using both
hands (A, C) increases danger. Gloves (D) are good but not the rule.
6. A helper is assigned to clean a substation control room. Which cleaning method
is safest for electrical panels?
A. Wet mopping with water
B. Vacuuming with a non-conductive attachment
C. Compressed air blowing from any angle
D. Using a metal brush
Correct Answer: B
Rationale: Vacuuming with non-conductive attachments removes dust without moisture
or metal. Water (A) causes shorts. Compressed air (C) can blow dust into contacts and is
unsafe. Metal brush (D) can cause shorts.
7. A hot stick used on a 34.5kV line must be tested for dielectric strength every:
A. 6 months
B. 12 months
C. 24 months
D. Only when damaged
Correct Answer: B
Rationale: ASTM F711 requires hot sticks to be electrically tested every 12 months.
Gloves are every 6 months (A). 24 months (C) is too long. Waiting for damage (D) is
unacceptable.
8. A helper sees a co-worker using a cell phone while walking through a
substation. The helper should:
A. Ignore it
B. Join the co-worker
C. Remind the co-worker of the no-phone policy due to distraction hazards
D. Report it to the co-worker's family
, Correct Answer: C
Rationale: Cell phones are a distraction in substations and can cause loss of situational
awareness. Ignoring (A) is unsafe. Joining (B) doubles the hazard. Family (D) is
inappropriate.
9. What is the primary hazard of using a damaged fiberglass ladder?
A. It may conduct electricity
B. It may collapse under load
C. It may cause splinters
D. It may be too heavy
Correct Answer: B
Rationale: Damaged fiberglass ladders (cracks, crushed rails) can collapse. Fiberglass
does not conduct (A) unless contaminated. Splinters (C) are minor. Weight (D) is not a
primary hazard.
10. The term "flash protection boundary" is defined as:
A. The distance at which arc flash PPE is required
B. The distance at which you can see the flash
C. The boundary of the substation fence
D. The boundary where voltage is no longer present
Correct Answer: A
Rationale: The flash protection boundary is where the incident energy is 1.2 cal/cm²
and arc flash PPE is required. Seeing (B) is not the definition. Fence (C) is physical.
Voltage (D) is an approach boundary.
11. A helper is using a corded drill. The cord is warm to the touch. What should the
helper do?
A. Continue using it if it's only warm
B. Stop using it and check for damage or overload
C. Wrap the cord in a wet rag to cool it
D. Use it only intermittently
ACTUAL QUESTIONS AND VERIFIED ANSWERS,
PLUS EXPLAINED RATIONALES/EXPERT VERIFIED
FOR GUARANTEED 100% PASS 2026/2027
LATEST UPDATE
SECTION 1: SAFETY, PPE & HAZARD RECOGNITION (Questions 1–50)
1. A helper arrives at a job site and notices that the rubber insulating gloves
provided are sticky on the inside. What should the helper do?
A. Wear them anyway as they are only sticky
B. Powder them with talc and wear them
C. Remove them from service and report the condition
D. Wash them with soap and water and continue
Correct Answer: C
Rationale: Sticky or tacky rubber indicates chemical degradation or ozone attack,
compromising dielectric integrity. The gloves must be removed from service and
reported. Powdering (B) or washing (D) does not fix the degradation. Wearing them (A)
is unsafe.
2. What is the minimum distance a helper must maintain from an energized
overhead conductor rated at 50,000 volts?
A. 5 feet
B. 10 feet
C. 15 feet
D. 20 feet
Correct Answer: B
Rationale: OSHA requires 10 feet of clearance for voltages up to 50kV. For each
additional 10kV above 50kV, add 4 inches. 5 feet (A) is too close. 15 feet (C) and 20 feet
(D) are for higher voltages or transmission lines.
,3. A helper observes water pooling around a pad-mounted transformer. What is
the primary concern?
A. The water may cause rust
B. The transformer may be energized through water
C. The water may attract insects
D. The transformer may overheat
Correct Answer: B
Rationale: Water pooling around energized equipment creates a shock hazard as it may
be energized. Rust (A) and insects (C) are secondary. Overheating (D) is not the primary
safety concern.
4. Which of the following is an example of "administrative control" for electrical
safety?
A. Rubber insulating gloves
B. Lockout/Tagout procedures
C. Arc-rated clothing
D. Insulated tools
Correct Answer: B
Rationale: Administrative controls are policies, procedures, and training (LOTO, permits,
work procedures). Gloves (A), arc-rated clothing (C), and insulated tools (D) are
engineering/PPE controls.
5. The "one-hand rule" in electrical work recommends:
A. Using both hands for stability
B. Keeping one hand in your pocket when working on live circuits
C. Using two hands for better control
D. Always wearing gloves on both hands
Correct Answer: B
Rationale: The one-hand rule reduces the risk of current passing through the heart
,(hand-to-hand path). Keeping one hand in your pocket minimizes this risk. Using both
hands (A, C) increases danger. Gloves (D) are good but not the rule.
6. A helper is assigned to clean a substation control room. Which cleaning method
is safest for electrical panels?
A. Wet mopping with water
B. Vacuuming with a non-conductive attachment
C. Compressed air blowing from any angle
D. Using a metal brush
Correct Answer: B
Rationale: Vacuuming with non-conductive attachments removes dust without moisture
or metal. Water (A) causes shorts. Compressed air (C) can blow dust into contacts and is
unsafe. Metal brush (D) can cause shorts.
7. A hot stick used on a 34.5kV line must be tested for dielectric strength every:
A. 6 months
B. 12 months
C. 24 months
D. Only when damaged
Correct Answer: B
Rationale: ASTM F711 requires hot sticks to be electrically tested every 12 months.
Gloves are every 6 months (A). 24 months (C) is too long. Waiting for damage (D) is
unacceptable.
8. A helper sees a co-worker using a cell phone while walking through a
substation. The helper should:
A. Ignore it
B. Join the co-worker
C. Remind the co-worker of the no-phone policy due to distraction hazards
D. Report it to the co-worker's family
, Correct Answer: C
Rationale: Cell phones are a distraction in substations and can cause loss of situational
awareness. Ignoring (A) is unsafe. Joining (B) doubles the hazard. Family (D) is
inappropriate.
9. What is the primary hazard of using a damaged fiberglass ladder?
A. It may conduct electricity
B. It may collapse under load
C. It may cause splinters
D. It may be too heavy
Correct Answer: B
Rationale: Damaged fiberglass ladders (cracks, crushed rails) can collapse. Fiberglass
does not conduct (A) unless contaminated. Splinters (C) are minor. Weight (D) is not a
primary hazard.
10. The term "flash protection boundary" is defined as:
A. The distance at which arc flash PPE is required
B. The distance at which you can see the flash
C. The boundary of the substation fence
D. The boundary where voltage is no longer present
Correct Answer: A
Rationale: The flash protection boundary is where the incident energy is 1.2 cal/cm²
and arc flash PPE is required. Seeing (B) is not the definition. Fence (C) is physical.
Voltage (D) is an approach boundary.
11. A helper is using a corded drill. The cord is warm to the touch. What should the
helper do?
A. Continue using it if it's only warm
B. Stop using it and check for damage or overload
C. Wrap the cord in a wet rag to cool it
D. Use it only intermittently
