Earth Resistance: What Is It & Standard Value w/Refs

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    Earth Resistance
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Earth resistance refers to the resistance encountered by electrical currents flowing through the ground, often measured in ohms. The standard value for ground resistance is typically recommended to be less than 5Ω for telecommunications and electronics, while a value under 25Ω is acceptable for other applications. Soil resistivity, which varies based on moisture and temperature, generally ranges from 10 to 1000 Ω-m. Resources for further understanding include technical documents and Wikipedia entries on soil resistivity. Accurate measurements of earth resistance are crucial for ensuring safety and performance in electrical systems.
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What is Earth resistance? What is the standard value of Earth resistance? Please help me with reference.
Your co operation will be highly appriciated.
 
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Do you mean "ground resistance" (<5Ω recommended for telecommunications & electronics, <25Ω otherwise)? or "soil resistivity" (varies with moisture and temperature typically from 10 to 1000 Ω-m)? or something else?

For ground resistance, see https://support.fluke.com/find-sales/Download/Asset/2633834_6115_ENG_A_W.PDF.
For soil resistance, see https://en.wikipedia.org/wiki/Soil_resistivity
 

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