Best insulator for electricity.

Only having a conductor isn't enough. We need protection so users don't get harm from the conductor. So insulator are used to cover the conductor. This will prevent from getting harm even though the insulator are been touch. So lets look out the best insulator for electricity.

1) PVC ( polyvinyl chloride)

When comes to best insulator for electricity,the first thing comes into your mind is PVC. PVC are now widely used in electrical wiring. Even cables are used PVC as insulator. These cables are insulate by a PVC pipe so the cable will be protect even get fire or chemically damage.Cost for PVC are low and it's light to carry.

2) Ceramic 

Electrical ceramic insulators are used in applications that require a non-conductive rigid component and/or source for heat dissipation. Although all ceramic formulations can be used in electrical applications, Steatite and Alumina (all grades) are the most common choice due to their excellent electrical properties.This ceramic insulation mainly used in high voltage transmission for overhead transmission lines.This high voltage cable will produce heat and these heat will absorb by ceramic.

3) Mica

Mica is unusual in that it is a good electrical insulator at the same time as being a good thermal conductor. This insulator also used in high voltage and low voltage cable and both used in overhead and underground transmission power lines.

4) Quartz 

Quartz crystals act as insulators with their high electrical resistivity.In fact, quartz crystals are able to act as excellent insulators even at elevated temperature. Clear fused quartz is said to oppose electric current better than opaque or translucent types of quartz and rightly have higher values of electrical resistivity.

5) Glass 

Glass is a perfect insulator. It commonly used in underground higg or low voltage cables.
Is resistivity is also very high and has low coefficient of thermal expansion.It has higher tensile strength compared to porcelain insulator.As it is transparent in nature the is not heated up in sunlight as porcelain.The impurities and air bubble can be easily detected inside the glass insulator body because of its transparency.Glass has very long service life as because mechanical and electrical properties of glass do not be affected by ageing.