Electrical wires are covered with plastic because plastic is poor conductor of electricity

Introduction:
Electrical wires are an essential part of our modern lives, allowing the transmission of electricity from power sources to various electrical devices. These wires are coated with plastic, which serves several important purposes. In this explanation, we will delve into the reasons why electrical wires are coated with plastic and discuss the benefits of this coating.

Insulation:
One of the primary reasons for coating electrical wires with plastic is to provide insulation. Electric wires carry a flow of electrons, which is essentially the movement of electric charge. Without proper insulation, these electrons could escape or come into contact with other conductive materials, potentially leading to short circuits, electrical shocks, or even fires. The plastic coating acts as a barrier, preventing the electrons from escaping and ensuring that the electrical current flows only through the intended path.

Protection:
Plastic coating also protects the metal wire beneath it from various external factors that might damage or degrade its performance. Some of the protective benefits offered by plastic coating include:

1. Mechanical Protection: The plastic coating shields the wire from physical forces such as abrasion, bending, or stretching. This prevents the wire from getting damaged during installation or everyday use.

2. Chemical Protection: Plastic is resistant to many chemicals, including oils, solvents, and acids. The coating helps safeguard the wire against corrosive substances that may be present in the environment or come into contact with the wire during its lifespan.

3. Moisture Protection: Plastic is an effective moisture barrier, preventing water or other liquids from reaching the metal wire. This is crucial because moisture can cause the wire to corrode, leading to reduced conductivity or even failure.

Color Coding:
Another advantage of plastic coating on electrical wires is the ability to incorporate color coding. Different colors of plastic coating are used to indicate specific purposes or to distinguish between wires in complex electrical systems. This color coding simplifies installation, maintenance, and troubleshooting processes, allowing electricians and technicians to quickly identify and work with the correct wires.

Conclusion:
In summary, the plastic coating on electrical wires serves multiple purposes. It provides insulation to prevent electrical hazards, protects the wire from mechanical, chemical, and moisture-related damage, and allows for easy identification through color coding. This combination of functions ensures the safety, reliability, and efficiency of electrical systems, making plastic-coated wires an integral component of our modern infrastructure.