IBEW Reading Comprehension Analysis 2 — Questions and Answers
Question 1: A safety manual states: 'All workers must de-energize and lock out equipment before performing maintenance, unless the task requires the equipment to be energized, in which case appropriate PPE must be worn.' A technician needs to lubricate a moving conveyor belt. What does the manual require?
- Wear PPE and lubricate while the belt is running
- De-energize and lock out the belt before lubricating (Correct answer)
- Get supervisor approval before any action
- Lubricate only during scheduled downtime
Correct answer: De-energize and lock out the belt before lubricating
Lubrication of a moving belt does not require it to be energized, so de-energize and lock out applies.
Question 2: A passage reads: 'Conduit fill calculations ensure that the total cross-sectional area of all conductors does not exceed the permitted percentage of the conduit's interior area.' What is the primary purpose of conduit fill limits?
- To reduce material costs
- To prevent overheating and allow conductor installation (Correct answer)
- To standardize conduit sizing across projects
- To comply with local building codes only
Correct answer: To prevent overheating and allow conductor installation
Conduit fill limits prevent overheating and make pulling conductors through conduit feasible.
Question 3: An instruction sheet says: 'Tighten terminal screws to the manufacturer's specified torque value. Under-tightening causes arcing; over-tightening can damage the terminal.' A worker skips using a torque screwdriver. Which TWO risks does the passage identify?
- Arcing from under-tightening and terminal damage from over-tightening (Correct answer)
- Short circuits and insulation damage
- Corrosion and ground faults
- Voltage drop and overheating of conductors
Correct answer: Arcing from under-tightening and terminal damage from over-tightening
The passage explicitly names arcing (under-tightening) and terminal damage (over-tightening) as the two risks.
Question 4: A code excerpt states: 'Receptacles installed in wet locations shall be in enclosures that are weatherproof whether or not the attachment plug cap is inserted.' What does 'whether or not the attachment plug cap is inserted' clarify?
- The enclosure must be weatherproof only when no plug is inserted
- The enclosure must be weatherproof only when a plug is inserted
- The enclosure must be weatherproof at all times, regardless of plug status (Correct answer)
- Plugs do not need to be weatherproof
Correct answer: The enclosure must be weatherproof at all times, regardless of plug status
The phrase means the weatherproof requirement applies continuously, not just in one state.
Question 5: A work order reads: 'Replace the faulty 20 A breaker in panel B with a breaker of the same amperage and interrupt rating. Do not upsize.' A technician finds only a 30 A breaker available on the truck. What should the technician do based on the instructions?
- Install the 30 A breaker temporarily until the correct one arrives
- Obtain the correct 20 A breaker before proceeding (Correct answer)
- Install the 30 A breaker since it is larger and therefore safer
- Contact the homeowner to get approval for the upgrade
Correct answer: Obtain the correct 20 A breaker before proceeding
The work order explicitly says 'Do not upsize,' so the technician must get the correct 20 A breaker.
Question 6: A passage states: 'Aluminum conductors expand and contract more than copper conductors with temperature changes. Connections must use devices rated and listed for aluminum to prevent loosening over time.' Why must connections be specifically rated for aluminum?
- Aluminum is cheaper and needs special fittings to match copper pricing
- Aluminum's greater thermal expansion can loosen connections not designed for it (Correct answer)
- Aluminum corrodes faster and needs insulated connectors
- Copper-rated connectors are too large for aluminum conductors
Correct answer: Aluminum's greater thermal expansion can loosen connections not designed for it
The passage states that aluminum's expansion and contraction causes loosening, which rated connectors are designed to accommodate.
Question 7: An OSHA directive reads: 'Employees shall not work alone in areas where immediate rescue may be required.' A worker is assigned to inspect a confined space alone. According to this directive, what is required?
- The worker may proceed if the space has been tested for gas
- At least one other person must be present or on standby (Correct answer)
- The worker must carry a personal gas monitor
- A supervisor must approve the solo entry in writing
Correct answer: At least one other person must be present or on standby
The directive prohibits working alone where immediate rescue may be needed, requiring another person present or on standby.
IBEW Reading Comprehension Analysis 2
A safety manual states: 'All workers must de-energize and lock out equipment before performing maintenance, unless the task requires the equipment to be energized, in which case appropriate PPE must be worn.' A technician needs to lubricate a moving conveyor belt.
What does the manual require?