EHS 1x7 galvanized steel strand, 3.6mm to 5.2mm, extra high strength wire for ADSS and OPGW aerial cable where sag budget is tight. Aerial fiber work lives or dies on sag. On a fixed span the messenger has to carry the cable at a tension low enough to protect the fiber and high enough to keep the cable out of the way of traffic, trees and other services. Extra high strength strand is how that balance is achieved without using a heavier strand that overloads the pole. The wire