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A 3-way lamp, also known as a tri-light, is a lamp that uses a 3-way light bulb to produce three levels of light in a low-medium-high configuration. A 3-way lamp requires a 3-way bulb and socket, and a 3-way switch. In 3-way incandescent light bulbs, each of the filaments operates at full voltage. Lamp bulbs with dual carbon filaments were ...
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).
3-way lamps and dimmable models with standard bases are available. Non-integrated CFLs have the ballast permanently installed in the luminaire, and usually only the fluorescent tube is changed at its end of life. Since the ballasts are placed in the light fixture, they are larger and last longer compared to the integrated ones, and they do not ...
No 3-way lamp support. Incompatibility with other bulb types. Will maintain a price premium while they are mandated in a minority of jurisdictions. While the pins spacing is standardized, there is no standard for base width. Some fixtures shroud or recess the socket, assuming base dimensions of the bulbs they came with.
The suffix after the G indicates the pin spread; the G dates to the use of Glass for the original bulbs. GU usually also indicates that the lamp provides a mechanism for physical support by the luminaire: in some cases, each pin has a short section of larger diameter at the end (sometimes described as a "peg" rather than a "pin" [2]); the socket allows the bulb to lock into place by twisting ...
Three-way E26d light socket E26 Edison screw to NEMA 1-15 adapter. Specifications for all lamp mount types are defined in the following American National Standards Institute (ANSI) [12] and International Electrotechnical Commission (IEC) publications: Lamp Caps – ANSI C81.61 and IEC 60061-1; Lamp Holders – ANSI C81.62 and IEC 60061-2