Top 12 Difference between Conductor and Insulator in Tabular Form

Do you want to learn the difference between a conductor and an insulator?

I will explain this here.

You will find conductors and insulators connected in most of the electrical circuits and overhead electrical power systems. Both have a different working role, properties, uses, and functions.

Difference between Conductor and Insulator

Difference between Conductor and Insulator

Here is an explanation for each of the differences in tabular form.

Sr. No. Contents Conductor Insulator
01 Definition

(Electrical Current)

A device or conducting material that can easily the flow electric current in a definite direction (free electrons) is called as a Conductor. A device or material that can restrict the flow of electric current (free electrons) is called as a Insulator.
02 Formation  It is formed by metallic bonds.  It is formed by covalent bonds.
03 Conductive Property It contains high electrical conductivity (so it carry more electrical power).  It contains low electrical conductivity.
04 Resistive Property


It has a low resistive property (low or negligible resistance).  It has a high resistive property.
05 Temperature Coefficient Property It has a positive temperature coefficient of resistance. With the increase in resistance, the temperature also increases, and vice versa.  It has a negative temperature coefficient of resistance.  The resistance increase with the decreasing temperature and vice versa.
06 Protective Function The conductor does not work as a protector. An insulator is worked as a protector or protective device.
07 Classification There are four different overhead conductor is used.1. All Aluminium Conductor (AAC)
2. All Aluminium Alloy Conductor (AAAC)
3. Aluminium Conductor Steel Reinforced (ASCR)
4. Aluminium Conductor Alloy Reinforced (ACAR)
There are six different types of the insulator are used.1. Pin Insulator
2.Suspension Insulator
3. Strain Insulator
4. Shackle Insulator
5. Post-Insulator
6. Stay Insulator
08 Materials Used (with Example) Silver, Gold, Copper, Aluminium, Iron, Metal, etc. these are the types of conducting material used in the conductor. Paper, Glass, Rubber, Mica, Porcelain, Wood, etc. these are the types of insulating material used in the insulator.
09 Protection The live conductor protected by insulation wrapping like PVC (Polyvinyl Chloride). There is no conducting material used in it so the insulator does not require protection.
10 Used It is used to carry current in electric circuits.  It is used to limit the current to the desired path.

11. Symbol of Conductor and Insulator

You can see these following symbols used in many of the electrical circuit designs.

  • The basic symbol of the Conductor:

Conductor symbol

  • The basic symbol of the Insulator:

Insulator symbol

12. Basic Working Concept

  • Conductor in Electrical Circuit:

When the conductor connects to other electrical power devices in the electrical circuit, it forms a closed circuit.

Conductor close circuit

Conductor connect with an Electrical Circuit

  • Insulator in Electrical Circuit:

When the insulator connects to the other electrical power devices, the current will not flow in the circuit. This circuit works as an open circuit.

Insulator Open Circuit

Conductor connect with an Electrical Circuit

Read More: Difference between the Closed and Open circuit.

These are the top 12 differences between the electrical conductor and the insulator. Hope each point is clear. Feel free to comment if you have any doubt.

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Thanks for Reading!

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