Electronical Maintenance and Electrical Installation Levels 1, 2 & 3
An electrical installation comprises all the fixed electrical equipment that are supplied through the electrical meter. It includes the cables that are usually hidden in the walls and ceilings, accessories (such as sockets, switches and light fittings), and the consumer unit (fusebox) that contains all the fuses, circuit-breakers and, preferably residual current devices (RCDs).