Ground Electrode Loop Resistance
Calculate Ground Electrode Loop Resistance instantly with the exact formula and a worked example.
Ground Electrode Loop Resistance
Soil resistivityΩ·m
Rod lengthm
Rod diametermm
Depth of rod topm
Number of rods
Utilization factor
Grounding loop resistance
11.9767Ω
Single rod
33.5Ω
Total rod length
12m
Compliance
30 Ω or less
More about: Ground Electrode Loop Resistance
What it calculates
The “Ground Electrode Loop Resistance” calculator computes Grounding loop resistance in Ω from 6 parameters: soil resistivity (Ω·m), rod length (m), rod diameter (mm), depth of rod top (m), number of rods, utilization factor.
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Soil resistivity = 100 Ω·m, Rod length = 3 m, Rod diameter = 16 mm, Depth of rod top = 0.5 m, Number of rods = 4, Utilization factor = 0.7 the result is 11.98 Ω (η depends on the number of rods and spacing (0.6–0.9 with spacing equal to rod length)).
How to use
- Enter soil resistivity, rod length, rod diameter, depth of rod top, number of rods and utilization factor — each field above is adjustable with a slider.
- Grounding loop resistance (Ω) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Ground Electrode Loop Resistance calculated?
The Ground Electrode Loop Resistance calculator computes Grounding loop resistance (in Ω) from soil resistivity, rod length, rod diameter, depth of rod top, number of rods, utilization factor. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Ground Electrode Loop Resistance calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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