Which ladder material is non-conductive and suitable for live-conductor work?

Which ladder material is non-conductive and suitable for live-conductor work?

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

Answer: (B)

When working near live electrical conductors, you need a ladder that won’t carry electricity to you. The material’s electrical properties determine how much current could travel if the ladder contacts an energized part. Fiberglass ladders are non-conductive and have high dielectric strength, meaning they resist electrical flow even in the presence of live voltage. They also resist moisture and corrosion, which helps keep their insulating properties reliable in real field conditions. That combination makes fiberglass the safest and most reliable choice for live-conductor tasks. Wood can be non-conductive when dry, but its insulating ability can degrade with moisture, rot, or damage, making it less dependable. Aluminum and steel ladders are conductive, so they present a shock risk if they contact energized parts.

When working near live electrical conductors, you need a ladder that won’t carry electricity to you. The material’s electrical properties determine how much current could travel if the ladder contacts an energized part. Fiberglass ladders are non-conductive and have high dielectric strength, meaning they resist electrical flow even in the presence of live voltage. They also resist moisture and corrosion, which helps keep their insulating properties reliable in real field conditions. That combination makes fiberglass the safest and most reliable choice for live-conductor tasks.

Wood can be non-conductive when dry, but its insulating ability can degrade with moisture, rot, or damage, making it less dependable. Aluminum and steel ladders are conductive, so they present a shock risk if they contact energized parts.