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  2. Backfeeding - Wikipedia

    en.wikipedia.org/wiki/Backfeeding

    A common source of unintentional backfeeding is an electrical generator (typically a portable generator) that is improperly connected to a building electrical system.A properly installed electrical generator incorporates the use of a transfer switch or generator interlock kit to ensure the incoming electrical service line is disconnected when the generator is providing power to the building.

  3. United States District Court for the Northern District of ...

    en.wikipedia.org/wiki/United_States_District...

    Initially, the court was not within any existing judicial circuit, and appeals from the court were taken directly to the United States Supreme Court. In 1837, Congress created the United States Court of Appeals for the Seventh Circuit, placing it in Chicago, Illinois and giving it jurisdiction over the District of Illinois, 5 Stat. 176. [4]

  4. Low-voltage network - Wikipedia

    en.wikipedia.org/wiki/Low-voltage_network

    A pole-mounted three-phase distribution transformer. Low-voltage feeders distributing power to households are placed below the transformer. A low-voltage network or secondary network is a part of electric power distribution which carries electric energy from distribution transformers to electricity meters of end customers.

  5. United States Court of Appeals for the Seventh Circuit

    en.wikipedia.org/wiki/United_States_Court_of...

    The United States Court of Appeals for the Seventh Circuit (in case citations, 7th Cir.) is the U.S. federal court with appellate jurisdiction over the courts in the following districts: Central District of Illinois

  6. UL (safety organization) - Wikipedia

    en.wikipedia.org/wiki/UL_(safety_organization)

    The UL enterprise [4] is a global private safety company headquartered in Northbrook, Illinois, composed of three organizations, UL Research Institutes, UL Standards & Engagement and UL Solutions. Established in 1894, the UL enterprise was founded as the Underwriters' Electrical Bureau (a bureau of the National Board of Fire Underwriters ), [ 5 ...

  7. Electric switchboard - Wikipedia

    en.wikipedia.org/wiki/Electric_switchboard

    It is an assembly of one or more panels, each of which contains switching devices for the protection and control of circuits fed from the switchboard. Several manufacturers make switchboards used in industry, commercial buildings, telecommunication facilities, oil and gas plants, data centers, health care, and other buildings, and onboard large ...

  8. Patch antenna - Wikipedia

    en.wikipedia.org/wiki/Patch_antenna

    A patch antenna is a type of antenna with a low profile, usually consisting of a printed circuit board. It consists of a planar rectangular or circular sheet or "patch" of metal, mounted over a larger sheet of metal called a ground plane. It is the original type of microstrip antenna described by Howell in 1972. [1]

  9. Bus duct - Wikipedia

    en.wikipedia.org/wiki/Bus_duct

    5000 ampere copper and 4000 A aluminium bus ducts. In electric power distribution, a bus duct (also called busway) typically uses sheet metal, welded metal [1] or cast resin to contain and isolate copper or aluminium busbars for the purpose of conducting a substantial current of electricity.