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The "local" earth/ground electrode provides "system grounding" [12] at each building where it is installed. The "Grounded" current carrying conductor is the system "neutral". Australian and New Zealand standards use a modified protective multiple earthing (PME [13]) system called multiple earthed neutral (MEN).
The extremely dry soil conditions would have required hundreds of feet of rods to be driven into the earth to create a low impedance ground to protect the buildings from lightning strikes. In 1942, Herbert G. Ufer was a consultant working for the U.S. Army. Ufer was given the task of finding a lower cost and more practical alternative to ...
The Earth circuit is modified when an ELCB is used; the connection to the Earth rod is passed through the ELCB by connecting to its two Earth terminals. One terminal goes to the installation Earth CPC (circuit protective conductor, aka Earth wire), and the other to the Earth rod (or sometimes other type of Earth connection).
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Extra connections between ground and circuit neutral may result in circulating current in the ground path, stray current introduced in the earth or in a structure, and stray voltage. [ citation needed ] Extra ground connections on a neutral conductor may bypass the protection provided by a ground-fault circuit interrupter.
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It is important to note this action occurs regardless of whether there is a connection to the physical ground (earth); the earth itself has no role in this fault-clearing process [4] since current must return to its source; however, the sources are very frequently connected to the physical ground (earth). [5] (see Kirchhoff's circuit laws). By ...
Image credits: BlueberrySympathizer There is an epidemic of animals in need of new homes. While there have (arguably) been some improvements in the situation over the years, things are still dire.