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Mains Supply And Consumer Unit
Split load consumer unit wiring diagram. If a split load unit is not required go to section 6. Consumer unit bsen61439 3. A split load board is designed for total safety and incorporates an rcd residual current device shown as e in the picture above as well as the double pole switch d. Some properties will have separate consumer units for their garages sheds or any other exterior buildings. A split load board is supplied with a main switch and rcd with the mcbs on the rcd side and the rcbos on the main switch side. These are usually simply smaller consumer units.
This means that the lights will go out and you could be plunged into total darkness. Consumer units that are fully rcd protected are available but could be dangerous if the rcd trips for a fault or a nuisance trip it will cause the electricity to all the circuits to be isolated. For this reason split way consumer units are preferred. Shown in the consumer unit casing above it is a metal pressed bar to which the mcbs clip. Split load consumer units. Find out how to wire rcds in split consumer unit.
The consumer unit and associated components have been type tested to the following specifications. Split load consumer units are new beasts as they are not directly drop in replacements for old school fuse boxes like single load consumer units are. They simply push on via a spring loaded lock at their back. Including building regulations and wiring regulations bs7671. Garageshed consumer unit. An installer will have to answer the question about which circuit should be connected to which particular bank of mcbs under the control of an rcd and which circuit would be best provided with.
Gallery of Split Load Consumer Unit Wiring Diagram
