Muaj ntau tshaj 20 ntau hom cables muaj nyob rau niaj hnub no, tsim rau kev siv xws li kev sib kis mus rau kev siv hnyav. Qee qhov feem ntau siv xws li Non-Metallic Sheathed Cable: Cov cables no tseem hu ua non-metallic tsev xov hlau lossis NM cables.
