I-Busbar heat shrink tubing yenziwe nge-polyolefin. Izinto eziguquguqukayo zenza kube lula kakhulu ku-opharetha ukucubungula amabhasi agobile. Impahla ye-polyolefin evumelana nemvelo inganikeza ukuvikeleka okuthembekile kokwahlukanisa ukusuka ku-10kV kuya ku-35 kV, kugweme amathuba okuba khona kwamafuleshi kanye nokuthintana ngephutha. Ukusetshenziswa kwayo ukumboza amabhasi kunganciphisa ukwakheka kwesikhala se-switchgear futhi kwehlise izindleko.