This area is here for information purposes. Designers and installers should obtain their own copy of BS7671:2018 and follow the requirements and recommendations in the 18th Edition of the IET Wiring Regulations.
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The 18th Edition of the Wiring Regulations will change how you carry out domestic installations with consumer units.
Is there such as thing as an ‘18th Edition Consumer Unit’?
Consumer units must be configured in the correct way, with the correct devices, to meet the requirements of the 18th Edition.
How do you select the right consumer unit?
Typically all circuits in domestic household premises will be protected by 30mA RCDs. The most effective way of providing 30mA protection, maintaining power continuity, managing PE currents, avoiding unwanted tripping, and achieving highest levels of occupation safety is to use individual RCBOs on each circuit within the installation.
How do you provide SPD and AFDD protection in one unit?
The ultimate consumer unit which caters for the requirements and recommendations of the 18th Edition will include 100A main switch, a Type 2 SPD and RCBOs with integral AFDD on each individual circuit.
Discover more about Consumer Units and the 18th Edition
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