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  2. Earthing system - Wikipedia

    en.wikipedia.org/wiki/Earthing_system

    In a TN (terra–neutral) earthing system, one of the points in the supply transformer is directly connected with Earth, usually the neutral-star-point in a star-connected supply transformer, the same point from which a neutral (N) connection would be provided. Exposed-conductive-parts within a consumer installation are connected with Earth via ...

  3. Smart grid - Wikipedia

    en.wikipedia.org/wiki/Smart_grid

    According to an article in the Boston Globe, Northeast Utilities' Western Massachusetts Electric Co. subsidiary actually attempted to create a "smart grid" program using public subsidies that would switch low income customers from post-pay to pre-pay billing (using "smart cards") in addition to special hiked "premium" rates for electricity used ...

  4. Single-wire earth return - Wikipedia

    en.wikipedia.org/wiki/Single-wire_earth_return

    The earth (or sometimes a body of water) is used as the return path for the current, to avoid the need for a second wire (or neutral wire) to act as a return path. Single-wire earth return is principally used for rural electrification, but also finds use for larger isolated loads such as water pumps.

  5. 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 that interrupts an electrical circuit when the current passing through a conductor is not equal and opposite in both directions, therefore indicating leakage current to ground or current flowing to another powered conductor.

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  7. Electrical wiring in North America - Wikipedia

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

    The neutral is connected to the center tap of the power company transformer of a split-phase system, or the center of the wye connection of a polyphase power system. United States electrical codes require that the neutral be connected to earth at the "service panel" only and at no other point within the building wiring system.

  8. Ground and neutral - Wikipedia

    en.wikipedia.org/wiki/Ground_and_neutral

    In electrical engineering, ground and neutral (earth and neutral) are circuit conductors used in alternating current (AC) electrical systems. The neutral conductor receives and returns alternating current to the supply during normal operation of the circuit; to limit the effects of leakage current from higher-voltage systems, the neutral ...

  9. US national security adviser Sullivan says Trump should like ...

    www.aol.com/news/us-national-security-adviser...

    "Australia is directly contributing to the U.S. submarine industrial base so that we can build out this submarine capability, supply Australia in the nearer term with Virginia class submarines and ...

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