Earthing and lightning protection
Earth rods, ring earths, soil measurements and earthing conductors.
- CalculatorTechnical drawing
Ring earth electrode calculator
Draw the building outline and place the down conductors. Get the ring length, joints and resistance.
Editable plan · resistance · A4 printMethod: R = 0.6·ρ/√A (DEHN, table 5.5.1) · BS 7430 - CalculatorVisualisation
Soil resistivity by the Wenner method
Enter the meter readings, compare apparent resistivity and carry the result into the earthing calculation.
Measurement series · chart · data transferMethod: ρ = 2π·a·R (Wenner method) - CalculatorTechnical drawing
Earthing resistance calculator
Calculate the resistance of a single rod, a line or a square of rods and compare the variants.
Rod · line · square · A4 printMethod: BS 7430 - Visualisation
Earth rod resistance vs length
See how the resistance of a single vertical rod falls with every metre and when driving deeper stops paying off.
Interactive chart · table · CSVMethod: BS 7430 - Calculator
Earthing conductor size for fault current
Size an earthing conductor for the fault current and compare five materials and tape dimensions.
Fe/Cu · Fe/Cu/Sn · Cu · stainless · Fe/ZnMethod: IEEE 80, thermal sizing formula