): A modifying factor is calculated to account for heat dissipation into surrounding layers. Final Permissible Current (
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: Material-dependent temperature constant (e.g., 234.5 for Copper). Determine the Non-Adiabatic Factor ( ): A modifying factor is calculated to account
: Material constant (e.g., 226 for Copper, 148 for Aluminum). : Initial and final temperature limits (°C). 226 for Copper