Separation of conductors in a system

In multi-core cables, the axial separation depends on the sreen and sheath construction.

In arrangements with single-core cables, the axial separation is the shortest distance between the center of two phases.

Symbol
$s_c$
Unit
mm
Formulae
$\frac{D_{is}}{F_x}$Multi-core cables, sector-shaped conductors
$D_i$Multi-core cables, common screen/sheath
$D_i+2\left(t_{scb}+t_{sc}+t_{scs}\right)$Multi-core cables, separate screen and common sheath
$D_{sh}$Multi-core cables, separate screen/sheaths
$D_{shj}$Multi-core cables, jacket around each core