Increasing the electrical load carried on a transmission line increases the line' s temperature, and too great a load will cause the line to exceed its maximum operating temperature
The line' s temperature is also affected by wind speed and direction: Strong winds cool the line more than light winds, and wind blowing across a line cools it more than does wind blowing parallel to it
The electrical load that a transmission line can carry without reaching its maximum operating temperature increases when the wind speed increases.