15m pole is suitable for 10KV line, the diameter of the slightly head is 190mm, and the diameter of the slightly tail is 390mm. From the slightly head (rod head) to the slightly tail (rod tail), the U-shaped hoop increases by 13mm every one meter. The underground depth of the 15m pole is 1\/6 of the total length, that is, 2.5m, and the ground is 12.5m. The U-shaped hoop model should be selected according to the actual situation. Under normal circumstances, I will choose the U-shaped hoop model of the cable bracket between 220mm and 340mm