Question

why earth wire is thick and thin than the other two​

Answer 1

Answer:

here u go

Explanation:

The main reason of giving earthing to a electrical or electronic equipment is to protect human from electrical shock.

Now the size of the earthing wire or earthing plug is generally given of higher size than the supply line(line wire). The reason behind that is as follows.

In case of short circuit the amount of current is so higher so the earthing cable size should be in higher size to withstand the current generated from the line cable.

And u must have seen the Three pin plug, in that the earth pin is of longer length than the phase and neutral pin. That insures the first contact of earth with the equipment before the contact of power. and in that way we will be in safe position to operate the machine.

hope this ans will apprise you…