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Showing posts with the label Earthing
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How A Residual Current Device (Rcd) Works

RCD means Residual Current Device. They are so called because they work based on the residual current in a circuit. The RCD is an electrical safety device specifically designed to immediately switc…
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Types Of Earthing Systems Used In Electrical Installations

The international standard IEC60364, part 4, and Reference 10 uses a set of diagrams to explain the five basic methods of earthing and providing the neutral of an electrical installation where it i…
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How To Measure Soil Resistivity

Wenner’s four-electrode method is popularly used to measure soil resistivity . In this method Four electrodes are driven into the earth along a straight line at equal intervals, S. The depth of the…
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Soil Resistivity Values For Different Types Of Soil

One key determinant of a good earthing installation is the soil resistivity of the soil where the earth electrode is installed. If you are involved  in earthing buildings and electrical installatio…
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How To Use Earthing Rods For Earthing Improvement

Vertically driven conductors called Earthing Rods are commonly used in earthing existing buildings and for improving or reducing electrical resistance of existing earth electrodes. See common terms …
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Common Terms Used In Earthing/Grounding Of Installations- Standard Practice

Earthing or Grounding of electrical installation is a common practice. However, some common terms used in the practice could sometimes be tricky. Here, we have attempted to provide explanations for…
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Earthing Protection Systems 1: Common Terms Used

Exposed conductive part Any accessible metal parts of electrical equipment item other than the live parts and which can accidentally become live. Electrical fault Accidental connection betwee…
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