Thickness of additional layer over jacket

This layer is added on top of the serving/jacket. It may be a semi-conducting layer or a flame retardant added during extrusion process or a flame retardant paint being applied after installation. For calculations, the additional layer has the same material properties as the serving/jacket.

Symbol
$t_{jj}$
Unit
mm
Related
$t_{j}$
Used in
$A_{j}$