Air temperature has less effect on the temperature of a transmission line than wind speed does. The electrical load that a transmission line can carry without reaching its maximum operating temperature increases when the wind speed increases. Electrical utility companies typically increase the electrical load on their transmission lines on days on which the wind has a strong cooling effect. Transmission lines that run parallel to the prevailing winds can generally carry greater electrical loads than otherwise identical lines at a right angle to the prevailing winds.
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.
Which one of the following is most strongly supported by the information above?