The SAG Calculator is an essential tool for engineers and technicians to accurately determine the sag and tension in overhead cables. This calculation is crucial for designing safe and efficient electrical infrastructure, ensuring proper clearances, and preventing failures. Use this calculator to quickly assess sag for various span lengths, cable weights, and applied tensions, streamlining your project planning and ensuring compliance with industry standards.
Formula:
The approximate formula for sag (S) in a cable supported at two points, based on a parabolic curve, is:
S = (w × L²) / (8 × T)
- S = Sag (e.g., meters or feet)
- w = Weight per unit length of the cable (e.g., kg/m or lb/ft)
- L = Span length (distance between support points, e.g., meters or feet)
- T = Horizontal tension in the cable (e.g., Newtons or pounds-force)