Underground electric network system including The selection of three-core and single-core power cables generally follows the following rules: three-core cables are selected under the condition of 6-10 kV voltage, and single-core cables are selected when the voltage level is 66 kV or above. However, 35 kV voltage grade cable has both three cores and single core. in this drawing shown derails of network and sign for more details of Underground electric network system download AutoCAD file, cad drawing or dwg format.
