What type of ladder material should be avoided when working near electricity?

When working near electricity, aluminum ladders should be avoided because aluminum is a conductive material. This means that if the ladder comes into contact with an electrical source, it can create a path for electrical current, significantly increasing the risk of electric shock or electrocution for the person using the ladder.

In contrast, materials like fiberglass are non-conductive and are specifically designed for use in environments where electrical hazards may be present, providing a safer option for workers. Wood and plastic are also non-conductive materials; however, they don't offer the same strength-to-weight ratio and durability as fiberglass or aluminum ladders but are still safer in electrical situations compared to aluminum.