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How to choose the Best Electrical Insulating Materials?

10/8/2013 4:26:16 PM | by Anonymous

Electrical Insulating Materials

An electrical insulating material is a material whose internal charges do not flow freely. Therefore, they do not conduct any electric current under the influence of any electric field. A perfect insulator however does not exist but some materials like paper, glass and Teflon do have relatively high resistivity. This makes them very good electrical insulators. Despite the fact that larger classes of materials generally have lower bulk resistivity. They are still considered good enough to insulate electrical wiring and cables. Some examples are plastic and rubber like polymers. These materials serve as practical and safe insulators for low to moderate volts.


Insulators are typically used in electrical equipments to separate and support electrical conductors without allowing any flow of current through them. An insulating material is used in bulks to wrap electrical cables or any other equipment is known as insulation. The term insulator is used for more specific descriptions. It refers to insulating supports that are attached to electrical power distribution or transmission lines to transmission towers and utility poles.


There are many types of electrical insulating materials that are used at home or anywhere else where electricity flows. Each of them has a specific set of properties designed to provide suitability for particular types of applications. They are often used for wiring and to protect electrically conducting materials as well as the people around them. These compounds often include common materials such as nylon, glass, ceramic and rubber. Most people choose electrical insulating materials based on their resistivity. It is a measure of how they oppose the flow of electricity as well as the application they are used in. Some materials are significantly more tolerant of moisture, abrasion, chemicals and high temperatures.


Electrical insulating materials are commonly used for wiring in buildings. Many wire products are manufactured using insulation such as polyvinyl chloride. This prevents charges from passing onto people or conductors. One example would be the aluminium or copper conductor inside. The safest product is a key point when choosing insulating materials for wiring in residential, commercial or industrial setting. Safety is often based on the external environment that the material is being exposed to and whichever is best at preventing electrical fire or shock.


If the electrical insulating materials are going to be utilized in areas with a large amount of heat such as the kitchen, choosing the right one is generally a major safety issue. Mica is one type that can be used in kitchens or around stoves and also other high temperature appliances. It is typically used alongside with electronic components such as transistors that can be heated up within a device. Moisture is potential damage to an insulator that is not resistant to it. Sometimes, a factor with foam products can also be used in homes as well as electronics devices.


Resistivity is a varying quality dependent on the electrical insulating material. It is often the reason why people would choose one material over another. The purity of the material together with how it responds to voltage under stress or over a particular time period typically characterizes its ability to oppose electrical currents. Comparisons made of various electrical insulating materials can also be read about on the internet. They may provide data on material resistivity based on factors like temperature, time and humidity.


Insulating plastics, foams and rubbers are also commonly used on walls, bookshelves and other places. There are also electrical insulating materials for circuit boards and other components. Thus, choosing the right one would mean to comply with the local or regional standards for electrical safety and fire protection as well.

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