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There are some geographical areas that we are unable to offer next day delivery as standard, such as the Scottish Highlands. We are unable to guarantee next day delivery to the following post codes AB31, AB33-38, AB44-56, IV, HS, KA27-28, KW, PA20-88, PH17-26, PH30-44, PH49-50, TR21-25 and ZE. However it is possible to add more but they should always have a fused connection unit or FCU between them and the location you’re taking power from. What this seems to suggest is that, although it isn’t at present, may be at some point in the future, split load boards may be deemed non-compliant and will need to be changed. This is something to bear in mind. The RCD is then clipped onto the DIN bar. The top clip is first clipped over the top of the bar and then bottom either clips over using a spring clip, a screw or simply just clips over. The image below is of what’s known as a split load board. This is where it features a main switch for the entire board plus at least 1 RCD labeled as “E”.
Along with an MCB for each circuit and the wiring required to wire up each MCB (more on this below), that’s pretty much it in terms of what you’ll find in a consumer unit, however there are some exceptions depending on what it’s serving, whether it’s domestic or industrial etc.
First of all, switch off the main switch or related MCB breaker in the main distribution board or consumer unit and make sure the main supply is turned off. If this isn’t done then it can lead to all manner of issues when reconnecting and testing the circuits, so it’s best for both your electrician and also you to know if there are issues before any work is started.
These rules apply for both ring mains and radial circuits and you also have to be aware that adding spurs to an existing circuit will also count towards the total length. Adding long spurs could make you exceed the limit! Now that you know exactly what elements make up a standard consumer unit and why they are needed it’s time to look at exactly how they are wired up and why this is done a particular way. If the circuit was originally a ring main but this has become broken and is now a spur or radial main then it could be fed with 2.5mm and 32 amp fuse.
How to Wire a Ring Circuit or Ring Final
Finally, for more help and information on staying safe when working around electricity, see our electrical safety project here. What is a Ring Main or Ring Final Circuit or Final Circuit? Once the incoming live is connected using a bus bar for each MCB, the next job is to connect each circuit to it’s relevant MCB. Once all of the MCB’s have been connected up, the final job then is to simply connect the earth running from the meter to the earth bar in the consumer unit
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