Armored Fiber Optic Cable withstands crush lots nicely, such as in rocky land, frequently essential for direct burial applications. Cable set up by direct burial in places where rodents are a issue typically have metal armoring between two coats to prevent mosquito penetration. Another program for armored fiber cable is in data centres, where wires are installed beneath the ground and one worries concerning the fiber cable being smashed. Indoor Armored Fiber Optic Cables might possess nonmetallic armor. Metallic armored fiber cable is conductive, therefore it has to be grounded properly. Much like additional fiber optic elements, there are unique names or significance utilized. "Armor" in certain companies' jargon refers to a twisted hefty wire rope kind cable enclosing the whole poly cable sheath/jacket. Double or single ply (two reverse ply layers of the steel cable ) is usually used submerged near coast and shoals. Inner metallic sheath members of aluminum or aluminum are used for durability and for buried cable finding with a tone collection.