Scotch 77 Tape is an arc and fireproofing tape designed to protect electrical cables. It is an unsupported elastomer that expands in fire to form an insulating char layer between the flame and cable. One half-lap wrap of the tape provides adequate protection and can withstand a simulated high current fault arc of 13,000°K for over 70 cycles. The tape is flexible, conforms easily to irregular shapes, and has flame resistant and self-extinguishing properties to protect cables in fire hazards.