Twisted cable in the engine compartment worries me

Hello, I’m new here as a member and unfortunately also Autolaie, so I would like to have your help. Recently I noticed a cable in the engine room, which is twisted in itself, wrapped around different pipes and whose insulation has slipped back at the end (perhaps through the whole turning). I took two photos of it. (At “detail photo”, later comes an overview photo.) Could someone tell me what this is for a cable and if this condition is worrying? Many D ank in advance, Gelsomina