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. Shown in the consumer unit casing above it is a metal pressed bar to which the mcbs clip.
Consumer Unit Dual Rcd Wiring From Isolator Diynot Forums
Split load consumer unit wiring diagram. 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. 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. They simply push on via a spring loaded lock at their back. These are usually simply smaller consumer units. Garageshed consumer unit. The consumer unit and associated components have been type tested to the following specifications.
If in doubt contact a qualified competent person. Split load consumer units. More electrical tips and diagrams wwwaboutelectricitycouk like subscribe and dont skip the ads shopping list. Find out how to wire rcds in split consumer unit. This means that the lights will go out and you could be plunged into total darkness. 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.
If a split load unit is not required go to section 6. 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. Including building regulations and wiring regulations bs7671. For this reason split way consumer units are preferred. Some properties will have separate consumer units for their garages sheds or any other exterior buildings. Consumer unit bsen61439 3.
Gallery of Split Load Consumer Unit Wiring Diagram
