# Maximum permissible conductor temperature rise

Value of the conductor temperature rise above ambient in the steady-state due to Joule losses, i.e. the standard maximum permissible temperature rise.

Symbol
$\Delta \theta_{R_{\infty}}$
Unit
$^{\circ}$C
Formulae
$- \Delta \theta_{d} - \theta_{a} + \theta_{cmax}$
Related
$\Delta \theta_{d}$
$\theta_{a}$
Ambient temperature [$^{\circ}$C]
$\theta_{cmax}$
Used in
$I_{2}$