Consumer Unit Replacement

Consumer unit replacements
 and Rewires


The electrical system within your house is often hidden away, with little thought given to it until there is a problem! It's essential to have things inspected regulary to ensure things are working as expected.




Often houses still have old style fuse boards installed. Whilst still serving a purpose after 30 years they don't offer the level of safety a modern consumer unit will provide. 



Our Service

At Chris Johnson Electrical we only us the highest quality units to ensure years of trouble free use and protection. A few images from some of our recent installations are shown below




We can test and inspect your current installation or if you think your due for an upgrade, contact us for a free quotation. 


Contact us

     0800 242 5541


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Consumer Units explained

The modern consumer units replaced old style Fuse boards as the requirements for electrical safety changed with the latest editions of the wiring regulations.


 An old style Fuse Board 













 A modern RCD Consumer Unit



So What is a consumer unit?

Modern consumer units are designed to be safe, flexible and upgradable. As you can see from the image below, there are a few main parts that make up a consumer unit. We explain what each part does below.



Main incomer - This is the main switch for all circuits served by the consumer unit. It is double pole meaning it isolates both the incoming live and neutral.

RCD An RCD, or residual current device, is a life-saving device which is designed to prevent you from getting a fatal electric shock if you touch something live, such as a bare wire. It can also provide some protection against electrical fires. RCDs offer a level of personal protection that ordinary fuses and circuit-breakers cannot provide.

MCB - Miniature Circuit Breakers MCBs are installed in modern consumer units, and are a convenient alternative to fuses as they can be reset without having to replace wire with a simple flick of a switch or button.



This video gives you some more information on the importance of having an RCD and how to test it.