Grounding Grid Design: SOIL_RESISTIVITY
IEEE 80 grounding grid design parameters including touch/step voltage safety limits (50 and 70 kg body weight), decrement factors by X/R ratio, and typical soil resistivity values by soil type.
| parameter type | condition | limiting value | surface layer derating cs (dimensionless) | unit |
|---|---|---|---|---|
| SOIL_RESISTIVITY | CRUSHED_SURFACE_ROCK_DRY | 100,000 | 0.74 | ohm-m |
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