# Losses in duct

In case of ducts made of a ferromagnetic steel pipe, the conductor current induces a current in the pipe which causes additional losses. We consider them with a separate loss-factor for cables in a common pipe.

Symbol
$W_{duct}$
Unit
W/m
Formulae
$\lambda_4 W_c$
Used in
$\Delta \theta_c$
$\theta_{de}$