O-calc Pro Line Design (2026)

As the grid modernizes with reconductoring projects and hardening for extreme weather, tools like O-calc Pro Line Design will become mandatory, not optional.

O-Calc Pro mathematically models the catenary curve of conductors hanging between structures. The software offers six different calculation modes for calculating cable tension and sag, including the intuitive "Tension to Sag" mode, where the user selects the initial unloaded tension, and the program determines the final loaded tension and sag based on environmental loads. O-calc Pro Line Design

If you are looking to improve your pole loading analysis, optimize your joint-use workflows, or reduce make-ready time, O-Calc Pro is the industry-recognized solution. As the grid modernizes with reconductoring projects and

: Changes made to a span (such as replacing a conductor) can be applied across the entire circuit in one action. If you are looking to improve your pole

Before opening the software, accurate field data must be gathered. This is often done using digital tools like IKE GPS devices, photogrammetry, or laser rangefinders. Field technicians record: Pole species, height, and class.