Earthing Grid Calculator
IEEE 80 · IEC · AS 2067
Soil & Surface
Soil model
Upper-layer ρ
Ω·m
Lower-layer ρ
Ω·m
Grid & Conductor
Length Lx
m
Width Ly
m
Spacing D
m
Depth h
m
Conductor Ø d
mm
‖ X count
cond.
‖ Y count
cond.
Material
Joint
Fault & Rods
Fault current If
A
Fault duration tf
s
Rods — count
×
Rods — length Lr
m
Advanced
Surface ρs
Ω·m
Surface thickness hs
m
Body weight
X / R
·
Shock duration ts
s
Split factor Sf
·
Growth Cp
·
Rod placement
Plan View
Plan view · Lx × Ly grid mesh + ground rods · Em / Es / GPR hotspots
Analysis
solved
IEEE Std 80-2013 §11–§16
Document
Audit-ready sheet
Revision History
| Rev | Date | Description | Author | Status |
|---|
Auto-stamped to
—
Notes
- Screening-level calculation per IEEE 80 closed-form equations. Field-critical designs verified with FEM (CDEGS / ETAP GroundMat / WinIGS).
- Soil resistivity assumed measured; Wenner four-pin survey per IEEE 80 §13.3 out of scope.
- Split factor Sf from system data; default 1.0 produces a conservative over-design (§15.9 Annex C).
- Transferred potentials (§17), fence grounding (§19), lightning / transients (AS/NZS 1768, IEC 62305) not modelled.
References
- — awaiting inputs —
Title Block
Ampacities ·Surry Hills · Sydney
Doc No—
RevA
ScaleN.T.S.
Date—
Drawn
Checked
Approved
Sheet1 of 1
Project
Client