On the peninsular mainland the electric current is transported along lengths of cableextended between pylons, whereas to take the supply to the islands undersea cables are used.
The Pirelli & Co company manufactures cables with a variety of voltages. The section shows the coating of insulation that covers the cable.
The cablers, vessels specialising in the placement of undersea cables, fix them on the seabed.
These cables have to withstand corrosion by salt water and maintain tension while being laid.