It acts as a protective enclosure that houses several key components, such as circuit breakers, fuses, and bus bars. The. The IEC (International Electrotechnical Commission) and BS 7671 (British Standard for Electrical Installations) both provide essential requirements for electrical installations, including those for fuse boards like garage unit, consumer unit and distribution board. While the IEC 60364 standard. A distribution board (also known as panelboard, circuit breaker panel, breaker panel, circuit breaker, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit. But what exactly is a power distribution box, and why is it so essential in our daily lives? The DB panel board controls the flow of electricity. It protects homes and industries from electrical hazards. What controls it: Feeder length, conductor impedance, load current, voltage regulation, protection coordination, and field exposure strongly affect performance. Practical check: A distribution line is not just a wire; it is a coordinated system of conductors, equipment, controls, and.