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Ukuqonda iNdima ebalulekileyo yee-Insulators ezidityanisiweyo kwiTheyibhile yoBunjineli boMbane yemixholo. Ziziphi Izinto Eziqungquthela Ngazo? 3. Izicelo zezixhobo zoBumba phezu kwezinto zeNkcubeko. ii-vs I-Porcelain Insulators: UFundo Oluthelekiso.