For earthing systems.
The earth conductors must have a short path and must not be subjected to mechanical Tensile or subject to the risk of corrosion or mechanical wear.
In any case, their section should not be less than 16 mm2 if protected against corrosion and 25 mm2 if not protected (CEI 64-8 standards).
Not suitable for overhead power lines.
Bare Copper Rope Technical Sheet