scope:

CLC/FprTR 50576:2012, which is a technical report, gives guidance on the procedure and rules for extended application using test results obtained from EN 50399 and EN 60332-1-2 in order to evaluate and classify the reaction to fire performance of power cables. The EXAP rules described apply to EN 50399 test results used for classification in Classes B2ca,Cca and Dca, additional smoke production classes s1,s2 and s3 and flaming droplets/particles. Cables of diameter 5,0 mm and less need to be tested as bundles according to EN 50399 and are excluded from these rules. Bundled cables are not included in the EXAP rules as the fire performance changes dramatically with the change of mounting. No rules have been developed for non circular cables which are not at present included in EN 50399. A specific EXAP rule has been developed for the most common generic power cable families. A general EXAP rule has been developed for any power cable families. The general EXAP rule is not applicable to data or optical cables. The use of the specific EXAP rule give benefits in the lower number of cables to be tested for a range of cable constructions (product family). An EXAP is only possible when cables belong to a defined family as defined in this technical report.