Regulation 421.1.201 – Protection against thermal effects – Consumer Units

The London Fire Brigade has been at the forefront in the key edits to Amendment 3 requirements that will directly improve personal safety and release the risk of residential fires.

This was as a result of arcing on cables where the tightening of terminals had not been sufficient, resulting in the overheating of terminals which eventually ignited the plastic enclosures.

Consequentially, Amendment 3 introduces a new regulation (421.1.201) relating to the enhancement of fire safety.

Regulation 421.1.201 states 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 a non-combustible material, or enclosed in a cabinet or enclosure constructed of non-combustible material and complying with regulation 132.12.

Regulation 421.1.201 will not be mandatory until 1st January 2016.

In line with this new Regulation, Shayla Electrical Limited has introduced a new concept of metal consumer units into their DANSON range which are manufactured from corrosion resistant steel and have delivered added features to provide full compliance to Amendment 3 regulation 421.1.201, as detailed here.

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