Electrical wires are conductive materials, typically made of metals like copper or aluminum, that allow electricity to flow from one point to another. They are essential components in electrical systems, connecting various devices and appliances to a power source. Wires are insulated with materials like PVC or rubber to prevent accidental contact and short circuits. There are different types of electrical wires, including single-core and multi-core wires, each designed for specific applications. Wires are categorized by their gauge, which indicates their thickness; thinner wires carry less current, while thicker wires can handle more. Proper selection and installation of electrical wires are crucial for safety and efficiency.