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Earthing Resistance Calculation

The calculation of earth (ground) rod resistances is one of the few instances where the North American and International standards have the same method of calculation. To simplify the calculation, I compiled the most commonly used formulas. As a note however, this does not include AC Substation Grounding as per IEEE Std 80 - IEEE Guide for Safety in AC Substation Grounding.

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Author

  • A Filipino Engineer, Registered Professional Engineer of Queensland (RPEQ) - Australia, and Professional Electrical Engineer (PEE 2574 - 1st Place April 1991) - Philippines with extensive experience in concept selection, front-end engineering, HV & LV detail design, construction, and commissioning of Hazardous and Non-Hazardous Area electrical installations in water and wastewater pipeline and pumping facilities, offshore platforms, hydrocarbon process plants and pipelines including related facilities. Hazardous area classification and design certification (UEENEEM015B, UEENEEM016B, UEENEEM017B).

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