Both ADSS (all-dielectric self-supporting) and OPGW (optical ground wire) cables are used on overhead power lines, but they serve different roles. OPGW integrates optical fibers into the ground wire itself and is installed on new high-voltage lines where it also carries fault current. ADSS is fully dielectric and is the preferred choice for retrofitting existing lines without de-energizing them, with spans typically from 100m to over 1000m. This guide covers the key selection factors: voltage level, span length, existing tower conditions and budget.
