Which ladder material is safest to use when working around electrical hazards?

• A. Wood
• B. Aluminum
• C. Fiberglass
• D. Plastic

Answer: (C)

Ladders around live electrical hazards should be nonconductive to prevent electricity from traveling from the work surface to you. Fiberglass fits this need because it does not conduct electricity, providing reliable insulation even if the ladder gets wet or dirty. This insulating property helps reduce the risk of shock if a live conductor touches the ladder.

Aluminum conducts electricity, so metal ladders can carry current to the user and are not safe near electrical sources. Wood can be nonconductive when dry, but it can absorb moisture, crack, or degrade over time, which compromises insulation and safety. Plastic ladders exist, but they’re not as widely trusted for electrical work as fiberglass and may lack the durability and insulation consistency needed on job sites.

So, fiberglass is the safest choice for working around electrical hazards because it minimizes electrical conduction and preserves insulation under typical conditions.