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  2. Isolated ground - Wikipedia

    en.wikipedia.org/wiki/Isolated_ground

    The primary reason for the use of isolated grounds (IG) is to provide a noise-free ground return, separate from the equipment grounding (EG) return. The EG circuit includes all of the metal conduit, outlet boxes, and metal enclosures that contain the wiring and must be grounded to provide a safe return path in case of fault currents.

  3. Earthing system - Wikipedia

    en.wikipedia.org/wiki/Earthing_system

    The "local" earth/ground electrode provides "system grounding" [13] at each building where it is installed. The "Grounded" current carrying conductor is the system "neutral". [clarification needed] Australian and New Zealand standards use a modified protective multiple earthing (PME [14]) system called multiple earthed neutral (MEN).

  4. Ground (electricity) - Wikipedia

    en.wikipedia.org/wiki/Ground_(electricity)

    Long-distance electromagnetic telegraph systems from 1820 onwards [a] used two or more wires to carry the signal and return currents. It was discovered by German scientist C.A. von Steinheil in 1836–1837, that the ground could be used as the return path to complete the circuit, making the return wire unnecessary. [2]

  5. Floating ground - Wikipedia

    en.wikipedia.org/wiki/Floating_ground

    Fourthly, a floating ground can help eliminate ground loops, [3] which reduces the noise coupled to the system. The image on the right shows an example of such a configuration. Systems isolated in this manner can and do drift in potential and if the transformer is capable of supplying much power, they can be dangerous.

  6. Ground and neutral - Wikipedia

    en.wikipedia.org/wiki/Ground_and_neutral

    An isolated power system was furnished, from a special isolation transformer, with the intention of minimizing any leakage current that could pass through equipment directly connected to a patient (for example, an electrocardiograph for monitoring the heart). The neutral of the circuit was not connected to ground.

  7. Single-wire earth return - Wikipedia

    en.wikipedia.org/wiki/Single-wire_earth_return

    Bare-wire or ground-return telecommunications can be compromised by the ground-return current if the grounding area is closer than 100 m or sinks more than 10 A of current. Modern radio, optic fibre channels, and cell phone systems are unaffected.

  8. Ground loop (electricity) - Wikipedia

    en.wikipedia.org/wiki/Ground_loop_(electricity)

    Ground loops can also exist within the internal circuits of electronic equipment, as design flaws. Addition of signal interconnection cables to a system where equipment enclosures are already required to be bonded to ground can create ground loops. Proper design of such a system will satisfy both safety grounding requirements and signal integrity.

  9. Galvanic isolation - Wikipedia

    en.wikipedia.org/wiki/Galvanic_isolation

    Galvanic isolation is a principle of isolating functional sections of electrical systems to prevent current flow; no direct conduction path is permitted. [ 1 ] [ 2 ] Energy or information can still be exchanged between the sections by other means, such as capacitive , inductive , radiative , optical , acoustic , or mechanical coupling.