Kwinkqubo ye-DC, zininzi iziphene zomhlaba eziquka umhlaba ongangqalanga, umhlaba ongeyiyo eyentsimbi, i-loop umhlaba oyi-loop, i-positive ne-negative earthing fault, ibhalansi elungileyo kunye nengalunganga emhlabeni, impazamo yomhlaba enamanqaku amaninzi.