What kind of materials are commonly used for conduits?

Conduits are essential components in electrical wiring systems, designed to protect and route electrical wiring. The correct choice identifies that conduits are made from metal and non-metallic materials.

Metal conduits, such as rigid metal conduit (RMC) and intermediate metal conduit (IMC), provide robust protection against mechanical damage and are often used in exposed locations. They also offer superior grounding capabilities, making them suitable for environments that require significant electrical safety measures.

Non-metallic conduits, like PVC (polyvinyl chloride) and fiberglass, are lighter, more resistant to corrosion, and can be easier to install. These materials are commonly used in residential wiring and underground installations due to their flexibility and resistance to moisture.

While glass and wood, brick and concrete, and biodegradable materials may be used in other contexts, they do not serve the specific purpose of conduit in electrical systems. Glass lacks durability for mechanical protection, wood is not suitable for the harsh conditions in which conduits often operate, and while brick and concrete can be used in construction, they do not fulfill the role of protecting electrical wiring as conduits do. Biodegradable materials, while environmentally friendly, do not typically provide the necessary protection and longevity required for electrical installations.