Calculate Size of Earthing Strip ~ Wire
This document discusses methods for calculating the number of pipe, plate, or strip earthings required based on factors like soil resistivity, fault current duration, and equipment ratings. It provides formulas from standards like IS 3040 and BS 7430 to calculate the resistance of a single earthed electrode and the total resistance of multiple electrodes in parallel configurations. The number of electrodes is determined by dividing the required fault current by the current each electrode can dissipate based on criteria like current density limits in standards. Sample calculations are shown for scenarios like an isolated pipe earthing and a group of electrodes with an connecting buried strip.
Calculate Resistance of Earthing Strip/Wire.
Calculate Minimum Size of of Earth Strip/Wire.
Title : Calculate Size of Earthing Strip ~Wire
Type : Microsoft Excel Spreadsheet (xlsx)
Size : 62.4 KB
