Temperature rise of the conductor by source h

Temperature rise of the conductor(s) of the rated cable, due to crossing heat source h, at the hottest point in the cable route.

Symbol
$\Delta \theta_{0x,h}$
Unit
K
Formulas
$\frac{\rho W_{h}}{4\pi} \ln\left(\frac{\left(L_{r}+L_{h}\right)^2+\left(z_{r}-z_{h}\right)^2}{\left(L_{r}-L_{h}\right)^2+\left(z_{r}-z_{h}\right)^2}\right)$