You might be thinking what is the use of such insulators when electric charges are not allowed to pass through them? However, these insulators find great usages at homes, streets, offices, etc.
You can find these in electrical equipment and appliances too. These are also used for preventing occurrences of high voltages where they save electrical devices from getting damaged.
Sometimes, a flexible insulator coating is applied to cables and electric wires. This is known as insulated wire. While sometimes wires do not need this coating, this becomes important in the case of wires that remain in close contact with each other. Such wires are more prone to produce short circuits, cross-connections, and fire mishaps.
In the case of a coaxial cable, the conductor at the middle needs adequate support right at the center of the hollow to stop EM wave reflections. Wires which expose voltages more than 60V can lead to human shocks as well as electrocution hazards. The answer to all these problems is insulating coatings.
The materials of Electrical Insulators hold electrons very tightly. This restricts the movement of electrons from one atom to another. As a result, the conduction of the electric chargers gets prevented.
Insulators reduce energy costs sufficiently and control pollutant emissions, thereby, protecting the environment. They enhance the performance of electrical appliances and keep users safe from being electrocuted. Apart from this, they also make appliances soundproof.
Since insulators in electricity have multiple applications, these are commonly applied to high voltage appliances, coating for electric wires, cables, electric poles, circuit boards, etc.
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