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Ukuqonda izibonelelo ze-cross Arm Composite Insulators Insulators Table yokungenisa imixholo kwi-Arqumla ye-Insulators Insulators Yiyo Umnqamlezo Ngaba ii-Insulators? Izibonelelo ze-cross Arm Composite Insulators ephuculweyo yokuncitshisa ubunzima bombane wokuSebenza kombane we-Cross Ar