A luminaire is another term for which component?

• A. Receptacle
• B. Light fixture
• C. Switch
• D. Ballast

Answer: (B)

The main idea is that a luminaire is the complete lighting unit that delivers light to a space. It refers to the whole assembly—the housing, wiring, and all components that shape and distribute the light—essentially what you would call a light fixture in common terms. This term is used to describe the complete product that houses the lamp and provides light, not just individual parts. The receptacle is simply an outlet for power, the switch controls current flow, and the ballast regulates current for certain lamp types; none of these alone is what a luminaire denotes. So the luminaire corresponds to the light fixture—the full lighting assembly installed to illuminate an area.