Emergency Lighting is described as being made of which material?

Emergency Lighting is described as being made of which material?

• A. Glass
• B. Plastic
• C. Glass or Plastic
• D. Metal

Answer: (C)

Emergency lighting components that need to illuminate escape routes are designed to have a transparent or protective cover that lets the light pass while shielding the source. Glass and plastic are the common choices because they balance visibility, durability, and weight. Glass offers clarity and scratch resistance, while plastic (such as polycarbonate or acrylic) provides impact resistance, lighter weight, and easier manufacturing into shapes. This is why the description often covers either material. Metal isn’t typically used for the light-transmitting parts since it’s heavier, can hinder light transmission, and may be less practical for lenses or housings in these fixtures.

Emergency lighting components that need to illuminate escape routes are designed to have a transparent or protective cover that lets the light pass while shielding the source. Glass and plastic are the common choices because they balance visibility, durability, and weight. Glass offers clarity and scratch resistance, while plastic (such as polycarbonate or acrylic) provides impact resistance, lighter weight, and easier manufacturing into shapes. This is why the description often covers either material. Metal isn’t typically used for the light-transmitting parts since it’s heavier, can hinder light transmission, and may be less practical for lenses or housings in these fixtures.