Insulated wire is a type of electrical wire that is covered with a protective layer, known as insulation. This insulation is typically made from materials like PVC or rubber, which prevent electrical current from escaping and protect against short circuits. Insulated wire is essential for safely transmitting electricity in various applications, from household wiring to industrial machinery. The insulation also helps to protect the wire from environmental factors such as moisture, heat, and chemicals. Different types of insulated wire are designed for specific uses, including low-voltage applications and high-voltage systems. Proper insulation ensures safety and efficiency in electrical systems.