What is the purpose of the top most wire on a transmission line pole?

Top of the cable is ground wire rest and other (1 or 3 lines) are phase cables. It is just for the protection from lighting strikes. They serve to shield the line and intercept lighting stroke before it hits the current carrying conductors below. That’s why they are often made of steel.

Why neutral wire is used in transmission line?

In the transmission line, there is no load can be connected so there is no need for the neutral wire. In the distribution network, as the different loads are connected in three phases, so here the neutral is required and is to be grounded to balance the total three-phase system.

Do transmission lines have a neutral?

Grounding Conductor The transmission lines connect to a grounded neutral conductor that gives a return path for electricity. The ground wire or grounding conductor is also called the multi-grounded neutral line. The grounding conductor runs the entire length of the pole.

Why is the neutral wire at 0v?

The loose live wire will have made the case 230 V, a person touching the case is also touching the ground and is, therefore, at 0 V. As the wire is made of copper, the earth wire provides a low resistance path to the ground.

Why do transmission lines are bare or uninsulated?

Higher the voltage thicker shall be the insulation. Hence insulating the lines adds up extra loads to it. Apart from this, storm and accumulation of ice over the line can add up the load and affect the stability of the line. To avoid this the lines are left uninsulated.

What is guard wire in transmission line?

[′gärd ‚wīr] (electricity) A grounded conductor placed beneath an overhead transmission line in order to ground the line, in case it breaks, before reaching the ground.

Where does the neutral wire go?

Neutral wires are usually connected at a neutral bus within panelboards or switchboards, and are “bonded” to earth ground at either the electrical service entrance, or at transformers within the system.

Why are transmission lines not neutral?

Originally Answered: Why is there no neutral in a transmission line? Because Neutral doesn’t carry current so it is not needed in transmission. Neutral is only required in distribution to create potential difference for utization of power.

Why does the neutral wire not shock you?

The electric current will flow through our body if the voltage is applied to our body. So when touching the neutral wire standing on the ground there is no voltage applied to our body, therefore no current flow through our body and we do not get the electric shock.