Pente ea insulator e nang le likarolo tse ngata, eo hape e bitsoang polymeric pin insulator kapa polymeric line post insulator, e na le molamu oa fiberglass o sireletsang o sirelelitsoeng ke ntlo (HTV Silicone Rubber) e reretsoeng ho ts'oaroa ka thata moahong o tšehetsang ka phini e fetang kahare ho ntlo e bopehileng kapa e entsoeng ka mokhoa o chitja oa ho qhekella. lintho tse bonahalang sehlahisoa: The insulator le likarolo tse ngata e entsoe ka li sireletsang serameng molamu, ka silicon molamu sekhomaretsi sleeve le bobeli qetellong ea fittings ho.