Electric powerlines in electric Post hang very low in hot summer? Why?

Electric power lines in the electric posts hang very low during the summer to prevent overheating. They’re often overloaded with high energy consumption and overheating could cause destruction of conductors. The high temperature could melt or expand the copper and aluminum materials. To protect public safety and guarantee an efficient energy transmission, the power lines are lowered to decrease temperature.

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.