An optical ground wire (also known as an OPGW or, in the IEEE standard, an optical fiber composite overhead ground wire) is a type of cable that is used in overhead power lines. Such cable combines the functions of grounding and telecommunications. Prysmian has a built-in multi-step quality assurance programme, which covers the entire production process from cable design and raw materials purchasing, to final inspecti tion for any single project. They adhere to international 1 and local standards 2 to ensure safety, functionality, and durability, making them essential for modern. OPGW is mainly applied in communication line of newly constructed high voltage transmit electricity system with 35 KV or above, or replacement of existing ground wire of previous overhead high voltage transmit electricity system, adding of communication lines and conduction of short-circuit current. This specification covers COMCAST® OPGW for the installation on high voltage overhead power lines. Installed at the top of high-voltage and extra-high-voltage transmission lines, OPGW cables provide lightning.