File:Earthing with lacks.jpg

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Summary

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Description
English: Variants of improper earthing.
  • 1) PE creating in outlet. Quite widespread in ex-USSR countries, cause the lion's share of Soviet apartment blocks with hard concrete walls (even for modern rotary hammers) have no PE wire at all. It was expensive in such giant volumes of work, so nobody did "useless work" puting PE wires.
  • 2) RCD is, but PE wire is missing. RCD can detect only if someone touch metal cover and get electric shock.
  • 3) PE wire is, but RCD is missing. Fuse will trip only if the gauge of yellow-green wire is enough. Otherwise cover will have danger potential for human on it and wires will heat.
  • 4) RCD and earthing are missing. If insulation will be spoiled, nothing will detect it. If human will touch it, nothing will protect him. If nobody help him intime, human will lose his life.
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Author Dmitry G
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[edit]
I, the copyright holder of this work, hereby publish it under the following licenses:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
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current20:29, 15 August 2010Thumbnail for version as of 20:29, 15 August 2010761 × 926 (139 KB)Dmitry G (talk | contribs){{Information |Description={{en|1=Variants of improper earthing. *1) PE creating in outlet. Quite widespread in ex-USSR countries, cause the lion's share of Soviet apartment blocks with hard concrete walls (even for modern rotary hammers) have no PE wire

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