An insulated wire formed by one or more mutually insulated conductive cores in a sealed jacket. Outside it can be added to the protective cover for transmission, distribution of electrical energy or transmission of electrical signals. Its difference from ordinary wires is mainly the large size of the cable and its complicated structure.
The cable is mainly composed of the following four parts. 1 Conductive core: Made of high conductivity material (copper or aluminum). According to the laying conditions of the requirements for softness of the cable, each core may be formed by twisting a single wire or multiple wires.
2 Insulating layer: The insulating material used for the cable should have high insulation resistance, high breakdown electric field strength, low dielectric loss and low dielectric constant. Insulating materials commonly used in cables include oil-impregnated paper, polyvinyl chloride, polyethylene, crosslinked polyethylene, and rubber. Cables are often classified by insulating materials such as oil-impregnated paper-insulated cables, polyvinyl chloride cables, cross-linked polyethylene cables, and the like.
3 Sealed sheath: protects insulated cores from mechanical, moisture, moisture, chemicals, light, etc. For easily damped insulation, lead or aluminum extrusion seals are generally used.
4 protective cover: to protect the sealing jacket from mechanical damage. General use of galvanized steel, steel wire or copper, copper wire wrapped around the outside of the sheath (called armored cable), armored layer at the same time as the electric field shielding and prevent external electromagnetic interference. In order to avoid the corrosion of the surrounding medium by the steel strip and the steel wire, they are usually coated with asphalt or wrapped with a layer of impregnated jute or extruded polyethylene or polyvinyl chloride.
Cables can be divided into power cables, communication cables, and control cables according to their use. Compared with overhead lines, cables have the advantages of small insulation distance between lines and small space. They are laid underground and do not occupy space above the ground. They are not affected by the pollution of the surrounding environment, they have high reliability of power transmission, and they interfere with personal safety and the surrounding environment. small. However, the cost is high, construction and maintenance are bothersome, and manufacturing is also complicated. Therefore, cables are often used in densely populated areas and densely populated areas as well as in busy traffic areas; large-span overhead lines can be avoided when crossing rivers, rivers, and seabeds. Cables can also be used wherever it is necessary to avoid interference with overhead transmission lines and where aesthetics or exposure targets need to be considered.
These amazing fiber optic lighting comprise of inconspicuous miniature acrylic heads that are almost invisible when not in use. Come the evening you can switch on these deck and patio light and watch heads turn.
The fiber optic floor lamp light are also ideal for creating magical star effects in the floor of children`s bedrooms or play areas. The effect from these deck lighting kits is truly stunning, especially when used with a twinkle effect.
Typically installed in: wooden floors, wooden decking, paving, pathways, interior and exterior steps and stages. Tails of these deck lighting kits can be installed in cement, between paving slabs, stones or even in the grout between tiles.
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