Question

What are high tension wire? Give two characteristics of these wire.

Answer 1

1. Each wire in a cable can only withstand a certain amount of current. If the current exceeds this limit (due to short-circuiting or strong voltage fluctuations), the wire may overheat and burn, resulting in a fire.
2. To avoid this, a specific wire known as the high tension wire is utilized for high voltage and strong current.
3. The two main characteristics that high tension wire must have are:
   1. Low resistance - These wires are made up of pure metals to make sure that high tension wires can carry the higher current.
   2. Large surface area - The surface of the wire is increased by twisting together thinner insulated wires to make them thicker to carry a larger current. A larger surface area can radiate the larger heat produced during the flow of current.