Overhead lines are mostly found in uninhabited or rural areas . they are clearly visible but the distance from the ground to the overhead conductors should not be ascertained by relying on visual judgement only 架空电缆通常会架设在无人居住地区或郊区，因此容易清楚看到，但架空导体与地面的距离则难以单凭肉眼可以判断。
