Geometric and contact resistance
This tool lets you calculate the geometric and contact resistance of a four legged tower. Please note that this provides you with an estimate only, considered to be in the range of 10% accuracy (+ and -). It is mainly helpful to understand earthing principles. For better accuracy use a different tool or commercial software.
Inputs & result
Ω·m
m
m
m
Total earthing resistance
–Ω
Details (split and intermediate values)
Electrode resistance
–Ω
Contact resistance
–Ω
rx=– m
ry=– m
rz=– m
Ltot=– m
A=– m²
Acontact=– m²
rΣ=– m
Q=–
3D view (rotate/zoom)
Foundation poles
Half-ellipsoid (visualising rx, ry, rz)
This tool is used in our modules on soil characteristics, measurements and potentials and tower footing resistance and impedance measurements.