A panel box, also known as an electrical panel or breaker box, is a critical component of an electrical system that serves as the main distribution point for electricity within a building. It houses circuit breakers or fuses that control and protect the electrical circuits connected to various parts of the structure, such as lighting, outlets, and appliances. Typically constructed from durable materials like metal, the panel box is securely mounted on a wall and features a protective door that conceals the internal components. Inside, each circuit breaker is assigned to a specific circuit, and these breakers are designed to automatically shut off power if an overload or short circuit occurs, thereby preventing potential fire hazards and equipment damage. The panel box also includes a main breaker that controls the entire power supply to the building. Proper labeling of the circuits within the panel box ensures easy identification and maintenance. Overall, the panel box plays a vital role in ensuring the safe and efficient distribution of electrical power throughout a building.