Indoor & outdoor fiber cable high visibility markers, id labels, printers, warning signs & posts, cable id sleeves and more for fiber optic applications. Underground installation of fiber optic cables for digital infrastructure utilizes different methods depending on various factors from terrain to cost to local codes. Whichever method is chosen, safety identification is common to all. Misidentification can cause downtime, disrupt essential services, and create safety hazards in data centers. 1 When they are applied using the help of a heat gun, they adhere permanently to the jacket of the cable and. Well identified wires, cables and components give professionals like you an immediate insight into how an installation works and how it is connected.