This Wire Is Designed to Provide a Path for Electrical Current to Travel If the Normal Paths Aren't Available. This Could Be Because the Other Paths Are...
This wire is designed to provide a path for electrical current to travel if the normal paths aren't available. This could be because the other paths are damaged, or there is too much electricity for them. To put it simply, the ground wire is only used when there is a fault or other problem in the electrical system.
Where should I connect the earth wire?
The earth wire is therefore connected to the case and is attached to a metal plate or water pipe underground. As the wire is made of copper, the earth wire provides a low resistance path to the ground.
The earthing of metallic appliances is necessary to prevent severe electric shock to the users. The metallic body of electric appliances is connected to earth wire so that any leakage of electric current is transferred to the ground.