Question

A ground wire is used to
1. Give good regulation
2. Give support to the tower
3. Connect a circuit conductor or other device to an earth-plate
4. Avoid overloading

Answer 1

Correct Answer - Option 3 : Connect a circuit conductor or other device to an earth-plate

Earth Wire:

• Earth wire is connected to the ground because ground or earth is the reference point in an electrical circuit.
• The main function of the earth wire is to prevent live wire from overloading and absorbs the excess electrons & flows to the ground.
• Galvanized steel wire is a versatile wire that has undergone the chemical process of galvanization.
• The size of the earth wire is determined by the ampere capacity of the service wires.
• Minimum size of earth wire for light circuit is 1 mm square for copper and 1.5 mm square for aluminum.