Which type of ladder should never be used near electrical equipment?

Metal ladders should never be used near electrical equipment because metal is a conductor of electricity. If a metal ladder comes into contact with a live electrical source, it could conduct electricity, posing a significant risk of electric shock or electrocution to the person using the ladder. Safety protocols emphasize the importance of using non-conductive materials, like fiberglass or plastic, near electrical installations to minimize this risk. Therefore, due to the potential dangers associated with using metal ladders in such environments, they are strictly advised against in safety guidelines.