Temperature of filler for multi-core cables type SS with sheath

With crossing heat sources, a temperature rise of $\Delta\theta_{0x}$ applies at the hottest point.

Symbol
$\theta_f$
Unit
°C
Formulae
$\theta_c-T_1 \left(W_c+\frac{W_d}{2}\right)+n_c T_2 \left(W_c \left(1+\lambda_1\right)+W_d\right)$