I-voltage ephantsi ye-spool ye-porcelain insulatorI-insulator ye-spool ixhotyiswe ngezakhiwo ezingaphezu kwezibini zeeambrela.I-conductor ibotshelelwe phakathi kwezakhiwo zeambrela eziphezulu kunye nezantsi, kwaye iziko lifakwe i-perforated.Idityaniswe ngokuthe ngqo kwingalo yomnqamlezo okanye i-splint enezikhonkwane zokubopha