"Calculation of thermally permissible short-circuit currents, taking into account non-adiabatic heating effects"
Using standard K factors for Copper/XLPE (approx 143): $$I_AD = 143 \times 300 \text (square root of time is 1) \approx 42,900 \text Amps$$ iec 949 pdf
"How much current can this cable handle during a short circuit before the insulation melts or the conductor is damaged?" "Calculation of thermally permissible short-circuit currents
The calculation approach set out by the International Electrotechnical Commission (IEC) follows a three-step process: iec 949 pdf
Below is an essay-style overview of its purpose, core methodology, and practical importance in power system engineering. Introduction to IEC 60949
