Isigqubuthelo sentonga yamandla ombane aphezulu sisetyenziswa njenge-insulator kunye ne-conductor exhasayo kwi-high voltage transmission kunye nomgca wokusabalalisa.Imveliso sisakhiwo esingaqhawukiyo kwaye sineengenelo zamandla omatshini aphezulu, ukusebenza okuqinileyo kokugquma kunye nokumelana nongcoliseko okulungileyo.I-insulator ineenzuzo zokusebenza okukhuselekileyo nokuthembekileyo, ukugcinwa okulula, ubomi benkonzo ende kunye neendleko zomgca ophantsi.
