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Grounding Grid Design: SOIL RESISTIVITY
SANDSTONE to WET SAND
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 | standard | unit |
|---|---|---|---|---|
| SOIL RESISTIVITY | SANDSTONE | 500 | IEEE Std 80-2013 | ohm-m |
| SOIL RESISTIVITY | WET CLAY | 20 | IEEE Std 80-2013 | ohm-m |
| SOIL RESISTIVITY | WET SAND | 200 | IEEE Std 80-2013 | ohm-m |
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