SafetyCâu 658 / 700
A crew must work near exposed energized electrical conductors. Which ladder choice is BEST for this task?
a.An aluminum ladder because it is lighter to position
b.Any metal ladder as long as workers wear gloves
c.A ladder made of nonconductive material such as fiberglass
d.A steel ladder because it is more rigid
Giải thích
Correct: near exposed energized parts, ladders must be made of nonconductive side rails, such as fiberglass, to reduce electrocution risk. Aluminum and steel ladders conduct electricity and are prohibited in that setting regardless of weight or rigidity, and gloves alone do not make a metal ladder safe near live conductors.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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