What is the general difference between conduit and cable in wiring methods?

What is the general difference between conduit and cable in wiring methods?

• A. Conduit uses insulation and sheath; cable runs inside a protective raceway.
• B. Conduit uses individual conductors inside a protective raceway; NM-B cable includes insulation and sheath; conduit is used for flexibility and protection in exposed areas.
• C. They are the same; no difference.
• D. Cable uses individual conductors inside a protective raceway; conduit includes insulation and sheath; conduit is used for flexibility and protection in exposed areas.

Answer: (D)

The main idea being tested is how conduit and cable differ in what they provide for wiring. Conduit is a protective raceway that houses the conductors themselves; you pull individual insulated conductors through the hollow tube (whether metal or plastic). Cable, such as NM-B, is a bundled assembly where the conductors are already insulated and wrapped in an outer sheath as a single unit. In practice, conduit is used to protect wiring and give a route, especially in exposed areas or locations where moisture or physical damage is a concern, and you can run individual conductors or use flexible conduit to fit complex paths. Cable is convenient for dry, concealed spaces where a ready-made insulated set of conductors is suitable. So the correct description is that conduit contains individual conductors inside a protective raceway, while NM-B cable includes insulation and a sheath, with conduit used for protection and routing in exposed areas.

The main idea being tested is how conduit and cable differ in what they provide for wiring. Conduit is a protective raceway that houses the conductors themselves; you pull individual insulated conductors through the hollow tube (whether metal or plastic). Cable, such as NM-B, is a bundled assembly where the conductors are already insulated and wrapped in an outer sheath as a single unit. In practice, conduit is used to protect wiring and give a route, especially in exposed areas or locations where moisture or physical damage is a concern, and you can run individual conductors or use flexible conduit to fit complex paths. Cable is convenient for dry, concealed spaces where a ready-made insulated set of conductors is suitable. So the correct description is that conduit contains individual conductors inside a protective raceway, while NM-B cable includes insulation and a sheath, with conduit used for protection and routing in exposed areas.