1.Exposed core

　　 Ọ pụtara na steeti ebe otu ma ọ bụ karịa isi wires na-ekpughere site na njide onye na-eduzi ka a na-akpọ wires ndị a na-ahụ anya. Tụkwasị na nke ahụ, ọ bụrụ na mkpakọ mkpakọ waya bụ isi nke akụkụ crimping bụ nke na-adịghị mma, nkwụsi ike ga-abawanye, ọ bụghị ikwu na ike nkwụsị ahụ ga-ebelata. Ọ dị mfe ịchọta mgbe ọ pụtara ìhè, mana n'ọtụtụ ọnọdụ N'okpuru ala, elu akụkụ ahụ nwere ike ịkụpịa ma ọ bụ gbajie isi waya. Ọnọdụ nke waya isi ọhụrụ nke akọwara n'ime ndetu na-esote siri ike ịchọta.

　　2.Excessive isi waya ikpughe

　　Ọbụlagodi na ọnọdụ mkpuchi ahụ ziri ezi, ma ọ bụrụ na ekpughere nha nke isi waya dị ogologo, ya ga-eme ka ngafe isi waya ikpughe, adịghị mma kwesịrị ekwesị, ntu mwepụ, ogbenye ọnụ nrụnye, wdg O yikarịrị ka ọ ga-eme. ma ọlị. Ọ ga-eme ka nguzogide nke akụkụ ahụ na-eme ka ọ ghara ịdị ike ma mee ka ike gwụ ike. otu (ma ọ bụ karịa otu) nke eriri isi ekpughere dị na ogologo oge, nke nwere ike ịmepụta sekit dị mkpirikpi na sekit ndị ọzọ, adịghị mma na-adaba adaba, na mbọ na-adịghị mma. Chere ọjọọ.

　　Even if the covering position is correct, if the exposed size of the core wire is too long, it will cause excessive core wire exposure, poor fitting, nail removal, poor terminal installation, etc. It is very likely to occur.

　　3.No core wire exposed

　　This refers to the state where the thread opening is not exposed at all. It will increase the resistance of the crimping part and weaken the tensile strength.

　　3.Uneven cores (cores lead out)

　　It means that the wire opening of the wire is pressed when the core wire is not neat, and one (or more than one) of the exposed core wire is in a long state, which may form a short circuit with other circuits, poor fitting, and loose nails. Wait bad.