BG Electrical Circuit Protection Shower Kit, IP65 Rated Metal Enclosure, 63 Amp, 240 x 176 mm

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To do away with any potential issues such as these, the older fuse wires have been replaced by their modern equivalent, the MCB or miniature circuit breaker. 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? 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. Scottish Highlands, areas which we class as zone 1 are post codes: AB30-38, AB44-56, FK17-99, G83, IV1-28, IV30-32, IV33-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH18-26, PH30, PH31-41, PH49-50 If you would like to find out more about these circuits, see our project on radial circuits. How Can I Tell if my House has Radial Circuits or Ring Mains (Final circuits)?

RCD’s also work by detecting an imbalance between the Live and the Neutral conductors and this feature is a requirement for all Class 2 double insulated equipment. Each MCB is installed by clipping it onto a DIN bar and the "teeth" of the bus bar are inserted into the base of each MCB. This carries the live current into the MCB and the cable that supplies the given circuit are connected to the top section. 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”. Consumer Unit with MCB and main double pole isolation switch Step 3 – Connect up Main Switch and RCD

Is There a Limit to Number of Sockets on a Ring Main?

Just as a matter of interest, DIN stands for Deutsche Industrie Norm and, originating in Germany, is any of a series of technical standards, used internationally, to designate electrical connections, film speeds and paper sizes. What are the Different Types of Consumer Unit? Now, mount all the three MCB’s (6A, 16A and 32A respectively) and 2-poles RCD (63A) in the built-in din rail in the garage CU. In terms of the law, RCD’s are only required to be installed in a new build, where additions or major alterations are done to an existing property or when a rewire is carried out. However to be sure that your electrician is doing it correctly, this is generally the process that’s followed: One very interesting point to note is that as of the issuing of the second edition of the BS7671 18th Edition Wiring Regulations, it introduces section 531.3.2 concerning unwanted tripping and how to minimise nuisance tripping in the home.

Essentially, if an EICR (Electrical Installation Condition Report) is carried out on such a setup and it is found that everything is working as it should be then all should be well, as long as there are no outside or zoned circuits that require an RCD. A standard ring main, final main, ring circuit or final circuit ring How Does a Final Ring Circuit or Ring Main Work? Now connect the Neutral wire “N” (Blue color) to the input “N” terminal of RCD. The output “N” terminal of RCD should be connected to the Neutral busbar terminal in the consumer unit. Also you should be aware that some years ago, the standard wire colours used in the UK were changed so that they harmonised with those used in Europe so you may have several different colours of wire in your home. See our wire colours project here for more information.

Scottish Islands:HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA30, PA32-34, PA41-49, PA60-78, PH42-44, ZE1-3 More recently RCBO’s have since come onto the scene. These are essentially a combination of an MCB and RCD so provide additional safety levels. Also they resolve the nuisance tripping issue highlighted in subsequent versions of the Wiring Regulations. Finally, connect the incoming earth/ground wire in Green with Yellow Stripe color (from the main earthing system) to the earth busbar terminal in the garage consumer unit. It is possible to extend a ring main if you need to. For help and information on how to do this, please see our extending a ring main project here. Cooker and Electric Shower Circuits

Before any work is done, firstly it is ensured that power to the entire property is isolated so that the consumer unit can be safely worked on. 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 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. They can also feature 1 or even 2 RCD’s. The RCD, or residual current device is similar to an MCB in that if it senses an issue it will trip and isolate all the of the MCB’s/fuses below it. More on these below.Once the first MCB is connected up, the others are connected in the same way, ensuring that each is connected to the correct size of MCB for the item(s) it’s powering. Step 1 – Isolate Power: Before any work actually takes place, the very fist job is to isolate the power to the whole consumer unit so it can be worked on safely Depending on the type of install will depend on what cables are used, you electrician will know exactly what to use. In this instance 16mm cables were used. A garage consumer unit is used to feed up fewer load circuits (generally 2-5 units). If only a small amount of load points are needed to power up through mains supply, they install a garage consumer unit instead of larger consumer units especially in outbuildings.

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. We are unable to deliver to the Isle of Scilly, Jersey, Guernsey, Northern Ireland, Isle of Man and the rest of Europe.To find out all about these circuits and how they are wired up, read on below. Ring Mains, Wiring Regulations and Electrical Safety For this example we are going to keep things very simple and use a consumer unit with 1 main double pole isolations switch, 1 RCD and a couple of MCB’s just to show how they are connected. Essentially each MCB is wired up in the same way so can just be repeated. When purchasing a consumer unit, it will either come with a main switch and RCD and possibly a number of MCB’s or it will come empty. Depending on how it’s being wired up and what your electrician has chosen to use will depend on what you go for.