* High Conductivity: Metals have a unique structure where electrons are loosely bound to their atoms. This allows electrons to move freely throughout the metal, making them excellent conductors of electricity.

* Durability: Most metals are strong and durable, able to withstand the stresses of handling and installation.

* Flexibility: Some metals, like copper, can be drawn into thin wires, making them flexible and easy to work with.

* Cost-effectiveness: Copper and aluminum are the most common metals used for cables due to their relatively low cost and good conductivity.

Examples:

* Copper: The most widely used metal for electrical cables due to its excellent conductivity and workability.

* Aluminum: A lighter and cheaper alternative to copper, although slightly less conductive.

* Silver: The best conductor of electricity, but its high cost limits its use to specialized applications.

Why other materials are not used:

* Non-metals: Non-metals, like plastics, rubber, and ceramics, are generally poor conductors of electricity. They are used as insulation around the metal conductors.

* Other metals: Some metals, like iron and steel, are magnetic and have poor conductivity, making them unsuitable for electrical cables.

In summary, metals are the ideal choice for electrical cables because they provide a reliable, durable, and cost-effective way to conduct electricity.