ALI Ladder Safety Practice Test 2025 – Complete Exam Prep

Question: 1 / 400

Which type of stepladder should not be used near electrical power sources?

Wood

Fiberglass

Aluminum

The reason aluminum stepladders should not be used near electrical power sources is that aluminum is a highly conductive metal. If an aluminum ladder comes into contact with live electrical wires or equipment, it can easily transfer electricity, posing a significant risk of electric shock or electrocution to the user.

In contrast, wood and fiberglass are non-conductive materials. Both types of ladders provide a safer option for use around electrical tasks; wood is an inherently non-conductive organic material, while fiberglass is specifically engineered as a non-conductor of electricity. Plastic ladders also fall into the non-conductive category, making them suitable for similar scenarios. Therefore, when it comes to safety around electrical sources, aluminum stepladders should be avoided to prevent potentially life-threatening electrical accidents.

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