Iikheyibhile ezingaphezulu kwe-35kV ziziingcingo ezinondoqo omnye kunye neshethi yesinyithi.Kuba i-sheath yesinyithi yentambo yondoqo omnye ihonjiswe kumgca wemagnethi oveliswe yi-AC yangoku kucingo olungundoqo, iziphelo ezimbini zentambo engundoqo enye inombane ophezulu owenziweyo.