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Grounding system calculation

The right earthing system protects people and equipment. GorkyCAD calculates: soil type, rod depth and count, resistance check against the standard — for TN-C-S / TN-S systems.

How it works

  • Choose soil type (clay, sand, black earth) — resistivity is applied;
  • Set rod parameters: length, diameter, distance;
  • GorkyCAD calculates resistance and says if ≤4 Ω is reached.

FAQ

What resistance is required?
For residential TN systems — ≤4 Ω per PUE, per IEC 60364 — 10 Ω for separate earthing. GorkyCAD checks both.
Which soil is the best?
Clay and loam have low resistivity (30-100 Ω·m), sand is worse (200-3000 Ω·m) — more rods needed.
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