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2. Light fixture - Wikipedia

   en.wikipedia.org/wiki/Light_fixture

   Cove light – indirect lighting recessed into the ceiling in a long box against a wall. Troffer – recessed fluorescent light fixtures, usually rectangular in shape to fit into a drop ceiling grid. Chandeliers and table lamps in the Bibliothèque Mazarine (Paris) Surface-mounted light – the finished housing is exposed, not flush with the ...

3. Lightbulb socket - Wikipedia

   en.wikipedia.org/wiki/Lightbulb_socket

   A lightbulb socket, lightbulb holder, light socket, lamp socket or lamp holder is a device which mechanically supports and provides electrical connections for a compatible electric lamp base. [1] Sockets allow lamps to be safely and conveniently replaced (re-lamping).

4. Junction box - Wikipedia

   en.wikipedia.org/wiki/Junction_box

   A small metal, plastic or fiberglass junction box may form part of an electrical conduit or thermoplastic-sheathed cable (TPS) wiring system in a building. If designed for surface mounting, it is used mostly in ceilings, concrete or concealed behind an access panel—particularly in domestic or commercial buildings. [2]

5. Edward F. Caldwell & Co. - Wikipedia

   en.wikipedia.org/wiki/Edward_F._Caldwell_&_Co.

   Edward F. Caldwell, a portrait painter originally from Waterville, New York, became part of an active community of designers in New York City during the early 1880s.By the end of that decade and into the 1890s, Caldwell worked for, and later became chief designer and vice president of, the Archer & Pancoast Manufacturing Company of New York, top designers of gas lighting fixtures.

6. Recessed light - Wikipedia

   en.wikipedia.org/wiki/Recessed_light

   When installed it appears to have light shining from a hole in the ceiling, concentrating the light in a downward direction as a broad floodlight or narrow spotlight. Different types of recessed lighting in a warehouse "Pot light" or "canister light" implies the hole is circular and the lighting fixture is cylindrical, like a pot or canister.

7. Aluminum building wiring - Wikipedia

   en.wikipedia.org/wiki/Aluminum_building_wiring

   Also, the size of the aluminum wire needs to be larger compared to copper wire used for the same circuit due to the increased resistance of the aluminum alloys. For example, a 15 A branch circuit supplying standard lighting fixtures can be installed with either #14 AWG copper building wire or #12 AWG aluminum building wire according to the NEC ...