A consumer unit, also known as a fuse box or distribution board, is a crucial component of a building’s electrical system. It serves as a central hub that distributes electricity to various circuits within a property. The unit contains several circuit breakers, fuses, or residual current devices (RCDs) that protect individual circuits from electrical overloads or faults.

Consumer units play a pivotal role during electricity metering as they facilitate the safe distribution of power from the main supply to different parts of a building. They ensure that electrical circuits are properly separated and protected, reducing the risk of electrical fires or accidents due to overloading or short circuits. Additionally, they allow for easy isolation of specific circuits for maintenance or in case of emergencies.

During metering, the consumer unit’s functionality is essential in accurately measuring the electricity consumption of different circuits or appliances within a property. It helps in monitoring and managing electricity usage, as well as ensuring safety by regulating the flow of electricity throughout the building.