Frequently asked CPR Questions

The recently introduced Construction Products Regulation (CPR) lays down harmonised rules for the marketing of construction products in the EU according to the product standard EN50575:2014.
Starting from 1st of July 2017, every product must be CE marked and needs to have a Declaration of Performance (DoP).

  • What is the purpose of the CPR?
    How can we apply for a CPR testing?
    How are the classes structured?
    If we get a Class Dca certificate, does it cover Class Eca?
    What is a Manufacturer and a Sponsor?
    Are certificates specified or required for Class Eca and Dca approvals?
    How are O.E.M. products treated in terms of DoP and CE labels?
    How are samples to be prepared prior to testing?
    Are there any specific requirement for Cable marking?
    Do different jacket colours of the cable mean individual CPR approval testing?
    How long is the Delivery time?
    Is the CPR Approval program for Class Eca and Class Dca a one time cost or an annual fee
    What happens if my cable fails the CPR approval Program?
    Is electrical testing a part of the CPR approval program?
  • Information from SH02/WG10

    As with all standards, some parts of a standard can be unclear. Notifying Bodies can ask the specialized group, in this case subgroup SH02/WG10 for interpretation of parts of the CPR standard concerning cables. All Notified Bodies are obliged to follow the interpretations pronounced by the SH02/WG10.

    Below are the latest answers (nov. 2016), subjected to change, for a number of questions set forward to SH02/WG10-workgroup by the Notified Bodies.

    Question from NB
    Answer from SH02/WG10
    Should a change of colour (jacket) required to consider a different cable family? No, as stated in TS 50576
    As a notified body, are we allowed to issue a classification for a class lower that the one corresponding to the results? (to “downgrade” the family, e.g. Dca instead of Cca); Yes
    What must be done whenever the manufacture change the supplier of one of the materials constituting the cable: are some checks required or is it the responsibility of the manufacturer to claim that the change of supplier does not affect the fire performance? Part of it will be related to FPC where the manufacturer will have to demonstrate that the change of supplier has no influence (based on test data) of course this is providing the “generic” component remain the same (e.g. PE from X to PE from Y). If the demonstration from the manufacturer is not satisfactory then a new test shall be performed.
    For power cables with a diameter ≤ 5 mm, my understanding is that every size should be tested. This could lead to a very large number of tests. Couldn’t (shouldn’t?) we agree on simple rules to select a limited number of sizes (2 or 3) and for safety margin (e.g. 20 %) at this stage? NO : NBs shall follow the EN standard and position paper no deviation can be accepted outside of EXAP or position paper.
    In addition to the previous point, can we consider all the sizes for a given type of cable (i.e. including cables with OD ≤ 5 mm) as a single family, or 2 families ( OD ≤ 5 mm and OD > 5 mm)? Two families. Cables ≤ 5 mm is not covered by EXAP
    How to deal with the cable with a diameter ≤ 5 mm within a family for which EXAP are used They have to be tested individually
    Classification a3 : is this a NPD? Or is it necessary to perform EN 60754-2 test ? (cf. Euroclass F in the Delegated Regulation) For a3: classification, the test shall be performed
    Cables constructed by fixing 2 (identical) cables side by side: should they be considered as a different family?Cables constructed by fixing 2 (identical) cables side by side: should they be considered as a different family? They are 2 different families
    Are cables with fire protection “coating” (in order o improve their reaction to fire) considered as cables covered by EN 50575 ?
    • Yes, if the cables is produced and put on the market with the coating
    • No, if the cable is protected after (in a such case the cable without the coating shall be CE marked)Yes, if the cables is produced and put on the market with the coating
    • No, if the cable is protected after (in a such case the cable without the coating shall be CE marked)
    Family with 2 cables where Dmax-20% = Dmin do we need to test 2 cables? The 2 cables shall be tested
    Are blind elements also considered as units for FOC? No a unit has a fibre in it.
    If part of (same) complete products are subcontracted within the same company, is there any testing and/or inspection of these products needed? No testing, if the same materials and processes are used, but initial inspection is needed in every production site. Continuous inspections may rotate depending on the FPC systems and production process.
    Are there any special rules for manufacturers outside Europe? No, they have to follow the same rules as European manufacturers.
    Is the EXAP identification under the responsibility of the manufacturer or of the NB? It is the NB responsibility to ensure that the familly defined in the classification report is in line with the rules (EXAP, BP, or PP)
    The extrapolation rule for large diameters as written in EXAP for Eca is somewhat confusing :

    On the one hand, it is written:
    the cable with the smallest diameter and approximately the largest diameter (where the cable chosen for test shall have a diameter within ( D – 20%) of the largest cable diameter in the cable family.)

    On the other hand, it is also included:
    Cables with a diameter larger than that tested may be added to the family classification in accordance with the following rule:

    • cable tested with diameter greater than 25 mm and less than or equal to 50 mm then all cables with diameter up to 50 mm included
    • cable tested with diameter greater than 50 mm and less than or equal to 75 mm then all cables with diameter up to 75 mm included

    Hence, if one want, e. g. to class for the range of diameters up to 50 mm, shall a cable with a diameter ≥ 40 mm be selected? Or is a cable with a diameter = 26 mm OK ?

    The D-20% will only apply to the maximum diameter.

    • A cable of 26 mm diameter is not OK to clasify up to 50 mm.
      E.g. A test for a dimaeter of 26 mm will allow to classify up to 32.5 mm diameter.
    • A cable with 45 mm will allow to classify up to a diameter of 50 mmThe D-20% will only apply to the maximum diameter.
    • A cable of 26 mm diameter is not OK to clasify up to 50 mm.
      E.g. A test for a dimaeter of 26 mm will allow to classify up to 32.5 mm diameter.
    • A cable with 45 mm will allow to classify up to a diameter of 50 mm
    Power and communication cables: in term of definition what are the limits in term of voltage for each type of cables ? Power cables in EXAP – for CCC no more than 50 V rating and over that the manufacturer has to specify the application. The type of cable will specified in the test and classification reports and the certificate when applicable.
    If a family is (using EXAP rules) qualified for example class D, but one (or both) of the test samples itself fulfils also class C -Can a classification report on class C for the individual cable be issued in addtion to a classification report D for the familly? Yes, but the C classification report can only be used for CE marking if th sampling has been done under the responsibility of the NB
    Audit testing: is a safety margin being added to the results (in case of a cable family)? No – the test is for the evaluation of the class of that cable
    Can a manufacturer consider the audit testing as is yearly test for the verification of constancy of performance (FPC testing) ? NO
    If a small cable fails in EN 60332-1-2 test, the standard proposes to do testing according to EN 60332-2-2 – is this also acceptable for CPR classification? NO
    How to cope with differences in the nominal cable diameter (which is used for
    the calculation of the cable parameter) and the measured cable diameter (which
    is used for carrying out the test)?
    The nominal cable diameter calculated by the producer shall be used for the calculation of the cable parameter according to TS 50576.
    For this calculation of the cable parameter, the number of cables on the test ladder (Ncalculation) using the formulae in EN 50399, shall be based on the nominal cable diameter calculated by the producer, resulting in the non-metallic volume per meter of ladder Vcombust.
    For the test, the measured cable diameter shall be used for the determination of the number of test pieces (Ntest) according to EN 50399 for carrying out the test.
    A difference between the nominal cable diameter calculated by the producer and the measured cable diameter is acceptable under the condition that the measured cable diameter does not differ more than ±10% from this nominal cable diameter.
    Note: Under this condition, it is acceptable that Ntest is different from Ncalculation
    Classification report: can a classification report contain for one familly different classification (e.g. small diameter having a different class etc.) Yes : Agrement between the NB and the Manufacturer