Copper and fiber optic cable and can be divided into two basic parts outdoor cable and indoor cable. The cable on the function and structure is not the same. Designed for indoor use cable, flame retardant and non flame retardant flame retardant electrical level there is an air core inside, there was a layer of flame retardant set outside. This cable can also be harmful gas environment.
Outdoor cable between commonly used in buildings, can meet the special environmental requirements of the installation site. Common three kind of installation method for underground cable () in the pipe, installed in the pipeline and the hole of the underground, it has a hollow or solid cable, and have a protective coat. Direct buried cable, is placed in the gutter, don't need to pipe protection. Loading complex Wells have additional layer of protection. Aerial cable, frame on a pole between buildings. According to different environment has many characteristics, such as lightning protection and rat bite.
Every one in the integrated wiring system using the copper lead core is after annealing treatment. Heat treatment is in the process of manufacturing after a period of heating process of special made in a specific environment can reduce the distortion and vibration stress.
In copper stranded wire, fine gauge wire is some what different lines in two or three strands of ridge together to form a single line. Hard wire connection, more easily stranded wire is more soft.
If wire wrapped a spacer layer, known as an insulator, to prevent the wire or wires between conduction and the environment. So you can control most of current to flow in the conductor cable in insulators is hot plastic, it is a kind of soft heated encounter cold hardened plastic.
Some cable with the outsourcing of the center conductor insulation materials, make the various strands in the cable with the outer makes quite finished cable insulation outside under pressure and be quite outside the protected when heated. The roundness of the cable is improved with symmetrical shape, also can improve the cable core insulation of electric vehicle with the environment. Now the core protection design for the flame retardant and also of the resistance type.
The last layer is used to protect the outer packaging is called coat, it surrounds the cable core, protect them from mechanical damage, moisture and other harmful objects. Like other dielectric materials. The cable jacket can improve physical, electronic, or chemical properties of cable insulation and the whole performance of the button. In some sad condition ring has wire coat dry for columns within another coat material armoring formation protection.
According to the latest standards, integrated wiring system of cable jacket, must adopt L.S.O.H (low smoke O element) materials. That is cable release in the combustion process of low smoke, and toxic halogen cable is zero. Therefore, we in the design of integrated wiring system, should try to use low smoke, non-toxic, flame retardant cable.