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  2. Residual-current device - Wikipedia

    en.wikipedia.org/wiki/Residual-current_device

    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 ...

  3. Electrical wiring in North America - Wikipedia

    en.wikipedia.org/wiki/Electrical_wiring_in_North...

    Most GFCI receptacles allow the connection and provide GFCI protection for down-stream connected receptacles. Receptacles protected in this manner or with a GFCI circuit breaker should be labeled "GFCI protected". (Outside North America these are referred to as a "Residual-current device" or RCD.) Arc-Fault Circuit Interrupter (AFCI) protection ...

  4. Parts of a theatre - Wikipedia

    en.wikipedia.org/wiki/Parts_of_a_theatre

    Orchestra or Orchestra Pit: In productions where live music is required, such as ballet, folk-dance groups, opera, and musicals, the orchestra is positioned in front and below of the stage in a pit. The pit is usually a large opening ranging from 4–6 feet (1.2–1.8 m) wide, 20–40 feet (6.1–12.2 m) long and 6–10 feet (1.8–3.0 m) deep.

  5. Bootleg ground - Wikipedia

    en.wikipedia.org/wiki/Bootleg_ground

    A receptacle with a bootleg ground. In building wiring installed with separate neutral and protective ground bonding conductors (a TN-S network), a bootleg ground (or a false ground) is a connection between the neutral side of a receptacle or light fixture and the ground lug or enclosure of the wiring device.

  6. Home cinema - Wikipedia

    en.wikipedia.org/wiki/Home_cinema

    A more expensive home cinema set-up might include a Blu-ray disc player, home theater PC (HTPC) computer or digital media receiver streaming devices with a 10-foot user interface, a high-definition video projector and projection screen with over 100-inch (8.3 ft; 2.5 m) diagonal screen size (or a large flatscreen HDTV), and a several-hundred ...

  7. Ghost light (theatre) - Wikipedia

    en.wikipedia.org/wiki/Ghost_light_(theatre)

    Ghost light on the stage of the David H. Koch Theater A ghost light. A ghost light illuminating an empty stage in a darkened theatre. A ghost light is an electric light that is left energised on the stage of a theatre when the theatre is unoccupied and would otherwise be completely dark.

  8. Box (theatre) - Wikipedia

    en.wikipedia.org/wiki/Box_(theatre)

    In a theatre, a box, loge, [1] or opera box is a small, separated seating area in the auditorium or audience for a limited number of people for private viewing of a performance or event. The interior of the Palais Garnier , an opera house , showing the stage and auditorium, the latter including the floor seats and the opera boxes above

  9. Audience risers - Wikipedia

    en.wikipedia.org/wiki/Audience_risers

    Audience risers are different from bleachers in that the seats for bleachers are integrated into the structure itself; audience risers are primarily platforms first, to which a variety of chairs, tables, cameras, spot lights, etc. may be used on. While bleachers provide fixed aisle ways and may not provide a solid floor, audience risers are ...

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