The stringing tension is always measured at the tensioner side. This Quick Reference Guide is intended to provide highlights of OPGW installation instructions needed in the field. To. This manual is formulated in accordance with IEEE 1138 - 2008 and IEEE 524 - 1992, etc. OPGW has dual functions of aerial ground wire and fiber communication. It deals with the factors that should be considered in determining the characteristics of this type of cable, the apparatus that should be used, the precautions that should be taken in handling the reels, and. worldwide quality standards. 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.