Earth resistance refers to the resistance encountered by electrical currents flowing through the ground. The standard value for ground resistance is recommended to be less than 5Ω for telecommunications and electronics applications, while a value under 25Ω is acceptable for other uses. Soil resistivity, which varies significantly with moisture and temperature, typically ranges from 10 to 1000 Ω-m. For detailed guidelines, refer to the Fluke documentation and the Wikipedia entry on soil resistivity.
PREREQUISITESElectrical engineers, telecommunications professionals, and anyone involved in grounding and soil resistivity assessments will benefit from this discussion.