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    Introduction

    Since July 2017, all power, control and communication cables permanently installed in buildings must comply with the Construction Products Regulation (CPR). This includes classification under BS EN 13501-6, which assesses cables for their reaction to fire. This guide is your reference for navigating Euroclass ratings, selecting compliant products, and understanding where each cable type fits into UK practice.

    BS EN 13501-6 vs BS EN 13501-1

    Although both use similar notation (B, C, D, etc.), they involve different test methods. For example, B2ca for cables is not the same as B for wall linings, but both imply strong fire performance.

    Euroclass Ratings for Cables (BS EN 13501-6)

    Modifiers:

    • s1a / s1 / s2 / s3: Smoke production (s1a = lowest smoke)
    • d0 / d1 / d2: Flaming droplets (d0 = none)
    • a1 / a2 / a3: Acidity (a1 = lowest corrosivity)

    Minimum Euroclass Recommendations (UK context)

    Common Cable Types and Ratings (with UK product examples)

    General Guidance

    • CPR Class should be printed on the sheath
      E.g. “BASEC Approved, CPR: Cca-s1a,d1,a1”
    • LS0H cables feel softer than PVC — more prone to nicking on sharp edges
    • If in doubt — use Cca or better in public areas or risers
    • Fca = fail → Do not install

    Main image downloaded from: https://cpr.europacable.eu/  Accessed: 2025-06-04

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