1. Mmiri nke insulator na gburugburu ebe iru mmiri, ụda na-eme mgbe ejiri eriri waya mee ihe, mgbawa na-eme, na mmiri mmiri nwere ike ịbanye ngwa ngwa, na-eme ka mmiri dị nro nke eriri eletriki eletrik. Ọ dị mkpa iji mee ka oyi akwa mkpuchi dị ike iji chebe eriri wiring, ma ọ bụ tụlee iji dochie eriri waya mgbe ọ dị mkpa. ihe mgbaàmà ndị ọzọ, nke na-eme ka ọ ghara ịgbanye ya nke ọma. N'oge a, waya eletrọnịkị ga-ebu ụzọ lelee ọnọdụ ahụ wee rụzie ya. Ọ bụrụ na enweghị ike ịrụzi ya, tụlee iji dochie eriri wiring.

　　3. Oke voltaji oke voltaji na-eduga na ndakpọ nke oyi akwa eletrik, na-ebute ọdịda nke eriri wiring na-enweghị ike inye ume.

　　4. na insulator na-aka nká Ịka nká nke insulator na-eme ka eriri wiring ghara ịdị ike nke ọma, ọ ga-eme ka ikpochapụ ọkụ na-adịghị mma ma ọ bụ bufee ihe mkpuchi ahụ n'oge eji ogologo oge. Maka ebumnuche nchekwa, a ga-edochirịrị eriri waya n'oge.

　　4. It is possible that the insulator is aging The aging of the insulator causes the wiring harness to not be energized normally, and it will cause poor heat dissipation or overload of the insulator during long-term use. For safety reasons, the wiring harness must be replaced in time.