Elongation of screen

For round and flat wires, an elongation factor can be considered to calculate the effective cross-section area of the screen when stranded around the cable core. The value depends on the stranding angle and a typical value is around 3%.

Another method to consider the elongation would be the length of lay as used for the armour wires.

Symbol
$\nu_{sc}$
Unit
$\%$
Used in
$A_{sc}$