Lub davhlau ya nyob twg yog siv los pab txhawb kev sib txuas ntawm cov xov hlau. Nws yog ib daim ntawv hlau kaw hauv insulating yas. Muaj qhov ntawm ob qhov kawg los ntxig cov xov hlau, thiab screws yog siv rau fastening los yog loosening. Piv txwv, ob lub xov hlau qee zaum yuav tsum tau txuas thiab qee zaum yuav tsum tau txiav. Lub sijhawm no, lawv tuaj yeem txuas nrog terminals thiab txiav tawm txhua lub sijhawm, Nws yog qhov yooj yim thiab nrawm yam tsis muaj vuam lossis winding lawv ua ke.
