A junction box is an electrical enclosure that houses connections between different electrical wires. It protects these connections from damage and prevents electrical hazards, such as short circuits or fires. Junction boxes are commonly made of materials like plastic or metal and are used in residential, commercial, and industrial settings. These boxes come in various sizes and configurations to accommodate different wiring needs. They often have removable covers for easy access to the connections inside. Proper installation of junction boxes is essential for safety and compliance with electrical codes, ensuring that the electrical system operates efficiently and safely.