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Mutual heating coefficient

Mutual heating substitution coefficient for a group of equally loaded buried cables acc. IEC 60853.

Symbol
$F_{\mu}$
Formulas
$\displaystyle \prod_{k=1}^{q} \frac{d_{pk1}}{d_{pk2}}$
Related
$d_{pk1}$
Distance to mirrored object [mm]
$d_{pk2}$
Distance to buried objects [mm]
$F_{mh}$
Mutual heating coefficient
Used in
$d_{hot}$
Spacing from hottest object in group [m]
$\gamma_t$
Attainment factor cables