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1 Conductor weight â Sag of the conductor is directly proportional to its weight. The weight of the conductors is increased due to ice loading. 2  Span â Sag is directly proportional to the square of the span length. Longer span gives more sag.  Tension -The sag is inversely proportional to the tension in the conductor.
RE: Is parking a loaded truck overnight bad for the suspension? sag=stress relaxation= outer fiber of the spring undergoing low temperature creep. Anyway, the more it is loaded, and the longer it is loaded, the more the springs will sag. There may also be some effect on bearings, bushings and so forth.