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2. Twilight switch - Wikipedia

   en.wikipedia.org/wiki/Twilight_switch

   Probe placed on top of a wall. A twilight switch is an electronic component that allows the automatic activation of a lighting circuit when natural light drops in a given environment. Among a large number of uses, the most common is to enable automatic lighting of streets, roads, highways, roads, gardens, courtyards, etc., when sunlight drops ...

3. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   Shown here will be fastened to this recessed, non-metallic box, then a cover plate is installed. This "double gang" (two unit) installation uses non-metallic-sheathed cable and twist-on wire connectors. In electrical wiring, a light switch is a switch most commonly used to operate electric lights, permanently connected equipment, or electrical ...

4. Multiway switching - Wikipedia

   en.wikipedia.org/wiki/Multiway_switching

   In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location.A common application is in lighting, where it allows the control of lamps from multiple locations, for example in a hallway, stairwell, or large room.

5. Electrical contact - Wikipedia

   en.wikipedia.org/wiki/Electrical_contact

   Contacts may be operated by humans in push-buttons and switches, by mechanical pressure in sensors or machine cams, and electromechanically in relays. The surfaces where contacts touch are usually composed of metals such as silver or gold alloys [3] [4] that have high electrical conductivity, wear resistance, oxidation resistance and other ...

6. Contactor - Wikipedia

   en.wikipedia.org/wiki/Contactor

   AC contactor for pump application. A contactor is an electrically controlled switch used for switching an electrical power circuit. [1] A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch.

7. Relay - Wikipedia

   en.wikipedia.org/wiki/Relay

   A contactor is a heavy-duty relay with higher current ratings, [16] used for switching electric motors and lighting loads. Continuous current ratings for common contactors range from 10 amps to several hundred amps. High-current contacts are made with alloys containing silver.

8. Bowl game schedule today: Breaking down the five college ...

   www.aol.com/bowl-game-schedule-today-breaking...

   Sun Bowl - Louisville vs. Washington. Time/TV/location: 2 p.m. ET, CBS, El Paso, Texas. Why watch: Oh what might have been for Louisville, which won at Clemson in dominant fashion and came within ...

9. Motor control center - Wikipedia

   en.wikipedia.org/wiki/Motor_control_center

   Motor control centers are usually used for low voltage three-phase alternating current motors from 208 V to 600 V. Medium-voltage motor control centers are made for large motors running at 2300 V to around 15000 V, using vacuum contactors for switching and with separate compartments for power switching and control. [3]