CPR Regulations- One Year On

On July 30, 2018, Posted by , In News,Technical Talk, With Comments Off on CPR Regulations- One Year On

It’s now been over a year since the Construction Projects Regulations for cable went ‘live’. But what impact have they had so far?
 
The CPR regulations were an important piece of legislation in the first place, but have since gained much greater prominence due to the fire at London’s Grenfell Tower. The loss of many lives at Grenfell has mean that people have since paid far more attention to fire regulations that they did previously, including the CPR regulations.
 
CPR regulations,
 
A cable’s CPR classification is determined by its reaction to fire. As of the 1st July 2017, manufacturers and sellers of affected cables must ensure full compliance with CPR legislation, with the CE marking of cables now being mandatory. Prior to this, the CE marking of cables was purely voluntary under the Construction Products Directive scheme.
 
So what impact has CPR had upon cables? Well, some steps have been taken to ensure that there is some uniformity, such as an update to BS6701:2016, for ‘Telecommunications Equipment and Telecommunications Cabling’. This update mandates that both specifiers and installers must ensure that their cable meets Euroclass Cca S1b d2 a2, at a minimum.
 
But there hasn’t been much else to add any clarity. BS6701 forms part of the IET Wiring Regulations (BS7671). The 18th edition of these regulations has been published, and is designed to come into effect on 1st January 2019. The most recent draft of BS7671 does not appear to have included any further guidance on CPR classifications.
 
On the subject of CPR Euroclasses, these have also led to some confusion. The cable Euroclasses are identified by the letters A-F, so there are seven different possible Euroclass criteria for a cable, (Class B has B1 and B2 levels).
 
However, there are also additional classifications within some of the Euroclass levels. Euroclasses B1, B2, C, and D have additional criteria for smoke production, smoke transmittance, burning droplets and particles, and acidity.
 
Some European countries have attempted to keep confusion to a minimum by establishing a minimum class for certain types of building. As an example, in France large occupancy buildings such as high-rise dwellings and hospitals are considered ‘high-risk’ and require a minimum class of B2ca,d1,a1. For buildings considered ‘lower-risk’, Eca cable can be used.
 
It is likely that classifications and minimum cable standards for use in certain types of buildings will undergo more change in the future. But exactly what changes will happen and when they will take place is still uncertain.
 
For more information about CPR and your obligations, get our free CPR FAQ download now. If you have any other queries contact us at sales@webro.com, or 0115 9724483.

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