Ityhubhu yokucutha ubushushu beBusbar yenziwe ngepololefin. Izinto eziguquguqukayo zenza kube lula kakhulu kumqhubi ukuba asebenze iibhasi ezigobileyo. Isixhobo sepololefin esivumelana nokusingqongileyo sinokubonelela ngokhuseleko oluthembekileyo lokugquma ukusuka kwi-10kV ukuya kwi-35 kV, kuthintelwa ukuba nokwenzeka kwee-flashovers kunye nokudibana ngengozi. Ukusetyenziswa kwayo ukugubungela iibhasi zebhasi kunokunciphisa uyilo lwendawo yesitshixo sokutshintsha kwaye kuthobe iindleko.