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The toggle light switch was invented in 1916 by William J. Newton. [2] As a component of an electrical wiring or home wiring system, the installation of light switches is regulated by some authority concerned with safety and standards. In different countries the standard dimensions of the wall mounting hardware (boxes, plates, etc.) may differ.
A mercury switch is an electrical switch that opens and closes a circuit when a small amount of the liquid metal mercury connects metal electrodes to close the circuit. There are several different basic designs (tilt, displacement, radial, etc.) but they all share the common design strength of non-eroding switch contacts.
Leviton was founded in 1906 by Russian immigrants Evser Leviton and his son Isidor Leviton when they began manufacturing brass mantle tips for natural gas lights in Manhattan's Lower East Side. [ 2 ] [ 3 ] [ 4 ] In 1910, Isidor designed a screw-in lampholder for the newly invented electric light bulb and within ten years the lampholders were ...
A North American NEMA-5 receptacle halfway through a corrective re-installation. The fluorescent green spacers, which firmly attach the receptacle to the metallic sub-structure, are made necessary by using 5 ⁄ 8 in (16 mm) drywall instead of 1 ⁄ 2 in (13 mm), or by slightly-misplaced device box housings.
A key switch 3-way socket has the switch incorporated in the lamp socket and requires no external wiring between switch and socket. This would be typical in a 3-way floor-standing floor lamp. A 3-way socket that is to be wired to a separate 3-way 2-circuit switch, is called a keyless 3-way socket. [4]
A shunt is a device that is designed to provide a low-resistance path for an electrical current in a circuit.It is typically used to divert current away from a system or component in order to prevent overcurrent.
A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device, more specifically a form of Earth-leakage circuit breaker, that interrupts an electrical circuit when the current passing through line and neutral conductors of a circuit is not equal (the term residual relating to the imbalance), therefore ...
Rocker light switch: Leviton: Frequently used in the United States to refer to any rocker light switch regardless of manufacturer, [93] [94] but still trademarked. [95] Dictaphone: Dictation machine: Nuance Communications, part of Microsoft: Used to describe devices that are used to record speech such as handheld voice recorders. [citation ...