Isivikelo senduku kalayini we-voltage ephezulu sisetshenziswa njenge-insulation kanye ne-conductor esekelayo kumzila wokudlulisa nokusabalalisa amandla kagesi aphezulu.Umkhiqizo uyisakhiwo esingaqhekeki futhi unezinzuzo zamandla aphezulu emishini, ukusebenza okuqinile kokufakwa kwe-insulation kanye nokumelana okuhle nokungcola.I-insulator inezinzuzo zokusebenza okuphephile nokuthembekile, ukugcinwa okulula, impilo ende yesevisi kanye nezindleko zomugqa ophansi.
