This standard defines classes of fires according to the material undergoing combustion.
In consequence it does not define a particular class of fire involving an electrical risk.
The present document classifies in four categories the different kinds of fires which can be defined in terms of the nature of the fuel. Such a classification is particularly useful in the context of fire fighting by means of an extinguisher.
This classiciation of fires was first established by CEN in 1968 in the Unification Document CENTRI 2/U1. It was subsequently submitted to ballot in November 1971 with a view to its translation into a European Standard, and adopted by CEN on 21 June 1972. On 19 March 1984 CEN adopted an amendment to EN 2 consisting of an addition of an introduction which has been extracted in whole from ISO 3941 (1977). This amendment was considered useful and was requested by CEN/TC 70 at its meeting on 25/26 March 1982 in Milan, as certain countries use or have used a specific class of fire to designate fires in live electrical installations.
At its meeting held in Paris on 29/30 January 1992 CEN/TC 70 has reconfirmed EN 2 without modifications.
This version supersedes EN 2:1972.
