Sag is a complex phenomenon influenced by material properties, tension, span length, environmental factors, load distribution, and support conditions. The MOT (Maximum Operating Tension) is the maximum tension that the cable can withstand over the long term. The regulatory authority imposes an MOT < 0. More conductor material is required; in the event of more sag, more weight must be supported by the supports, higher supports are required, and there is a possibility of a stronger swing amplitude owing to. Overhead transmission lines are the backbone of modern power systems, carrying bulk electricity across long distances. Before any conductor or OPGW (Optical Ground Wire) is strung between two towers, engineers must carefully calculate sag and tension. Sag and tension calculation is not just about. mmon terminology. If the conductors are too much stretched between supports in a bid to save conductor material, the stress in the conductor may reach unsafe value and in certain cases the conductor may.
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