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Contactum Defender,Hager & CPN Cudis Consumer units adhere to Amendment 3, BS 7671 of the 17th Edition Wiring Regulations. This new regulation requires consumer units and similar switchgear assemblies within a domestic premises to have their enclosure manufactured from non-combustible material, or enclosed in a cabinet or enclosure constructed of non-combustible material while complying with BS EN 61439-3 and regulation 132.12.

Amendment 3 Wiring regulations - Key Facts

The amended regulations include changes to:

• the electrical condition report section

• new requirements for mobile and transportable electrical units

• the installation of luminaires and light fittings, bringing them in line with the latest international and European standards

It also includes a NEW Regulation 421.1.201, which requires that within domestic (household) premises, consumer units and similar switchgear assemblies shall comply with BS EN 61439-3 and shall have their enclosure manufactured from non-combustible material, or enclosed in a cabinet or enclosure constructed of non-combustible material and complying with Regulation 132.12.

This has been introduced as a result of London Fire Brigade reporting that a rising number of domestic house fires were being caused as the result of the consumer units catching fire. The purpose of this Regulation is to contain any fire within the enclosure and to minimise flames from escaping, caused mainly as a result of poorly installed connections and poorly located units in the home.

Whilst metal (steel) enclosures are deemed to offer the best non-combustible characteristics, any installed consumer units with plastic enclosures is not necessarily a fire risk if the consumer unit and its incorporated components conform to the relevant product standard(s), do not have latent defects, and have been installed correctly to the manufacturer’s instructions. It is however, better to be safe than sorry!

Amendment 3 Consumer Units

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