Sag produced in the conductor of a transmission line depends on?
-The tension of the cable (the tighter, the less sag, but this can cause other problems if too tight)
-The temperature outside (the higher the temperature, the more it will sag)
-The amount of current flowing through the cable (the more current, the hotter the conductor will get = more sag)
-The type of cable (aluminimum will sag more than copper; ACSR will sag less than straight aluminimum).