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  Different Types of Cables Low Tension Cable:   These cables are used for voltage levels upto 6.6kV. Paper is used as insulatuion in these type of cables. Over this paper insulation another insulation of impregnated paper is provided after that lead sheath, bedding, aromouring and serving are provided. Single Core LT Cable Medium and High Tension Cable:  These are Three core cables i.e. multi core cables and are used for voltage upto 66kV. It is of two types, belted cables and screened type cables. The screened type cables are further divided into H-type Cables and S-L (Seperate Lead) type Cables. Belted cables: These cables are used for voltage level up to 11kV. The cores are not circular in shape and insulation present is of impregnated paper and these cores are belted together with help of paper belt. Gaps are filled with fibrous material like jute and then it is covered with sheath and other things. Screened type cables: These cables are used for voltage levels upto 22kV – 33kV In

 Cables are essential components in various applications, providing a means to transmit power, signals, or data between different points. Cables can be classified based on several factors, including their construction, insulation material, application, and the type of signals they carry. Here are some common classifications of cables: Based on Construction: Single-Conductor Cables: These cables consist of a single conductor surrounded by insulation material. They are commonly used for low-voltage applications such as wiring in residential and commercial buildings. Multi-Conductor Cables: These cables contain multiple insulated conductors within a single sheath. They are often used for applications requiring multiple signal or power lines, such as telecommunications, control systems, and instrumentation. Coaxial Cables: Coaxial cables consist of a central conductor surrounded by insulation, a metallic shield, and an outer insulating layer. They are commonly used for high-frequency sig

choice of lightning arrester depends upon the following factors: Voltage Current Reliability Space available for installation Types of lightning arresters. Rod Gap Arrester Sphere Gap Arrester Horn Gap Arrester Multiple-Gap Arrester Impulse Protective Gap Arrester Electrolytic Arrester Expulsion Type Lightning Arrester Valve Type Lightning Arresters Thyrite Lightning Arrester Auto valve Arrester Oxide Film Arrester Metal Oxide Lightning Arrester Rod Gap Arrester It is one of the simplest types of  Lightning Arresters . In the before-mentioned type, there is a gap between the end of the two rods. These two rods get connected to the earth and the line directly. The gap gets filled with air. When there is a higher voltage on the line, the air ionizes, producing a spark. In this fashion, the fault current passes to the earth. The process is explicated above in the snippet. Hence, the equipment is saved from potential damage. Sphere Gap Arrester In such types of lightning arresters, an air