IEC Cable Sizing Calculations

This section details the IEC 60364-5-52 standards for De-rating factor, Voltage Drop, Short Circuit, Earth Fault and Cable Temperature calculations.

Reference IEC standard tables used for Core Sizes and Current Rating

IEC Table B 52.2 to Table B 52.13

The core sizes and current ratings of cables are used in the equations to calculate the voltage drop, and cable sizes under short circuit and earth fault conditions.