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
$\Delta \theta_{\mathrm{0x_{\mathrm{h}}}}$
Unit
K
Formulae
$\frac{W_{\mathrm{h}} \rho}{4 \pi} \ln{\left (\frac{\left(L_{\mathrm{h}} + L_{\mathrm{r}}\right)^{2} + \left(- z_{\mathrm{h}} + z_{\mathrm{r}}\right)^{2}}{\left(- L_{\mathrm{h}} + L_{\mathrm{r}}\right)^{2} + \left(- z_{\mathrm{h}} + z_{\mathrm{r}}\right)^{2}} \right )}$
Related
$\Delta \theta_{\mathrm{0x_{\mathrm{1}}}}$
$z_{\mathrm{h}}$
$z_{\mathrm{r}}$