Nyorera kune yakaderera voltage aerial yakashama tambo (Cu.Or Alu) inobatanidza kune insulated tambo kana pamberi pekushongedza condutor (Cu, Kana Alu.) Mutsara mukuru: aerial Cu kana Alu. Tinya mutsetse: insulated Cu kana Alu. Insulating muviri wakagadzirwa nesimba rakawanda, Mamiriro ekunze uye michina inodzivirira zvinhu.