These lines have a strand head, numbered veins & no inner shell For permanent installation in industrial facilities where there is a risk of explosion. The cable is complies with the VDE 0165 section 12.2.2.6, which stipulates special labelling of cables & wires from the ignition protection type &lsquo i&rsquo (intrinsic safety). High-stability is secured through a solid copper wire in connection with a special jacket mix based on PVC.