Non-metallic cable is a type of electrical cable that uses materials like plastic or rubber for insulation instead of metal. This design makes it lightweight, flexible, and resistant to corrosion, which is beneficial for various applications, including residential wiring and outdoor installations. These cables are often used in low-voltage applications, such as connecting appliances or lighting fixtures. Common types include NM cable (non-metallic sheathed cable) and UF cable (underground feeder cable), both of which are designed to meet specific safety and performance standards in electrical systems.