BS 7846:2015 specifies the requirements for concrete structure and performance. The rated voltage of thermosetting insulated armored fire-resistant cables is 600/1000 V, and the low emissions of smoke and corrosive gases are affected by fire under the following conditions. This British Standard applies to cable industrial areas, buildings, or similar applications used in fixed installations in the UK, where power maintenance fires require supply within a specified time frame. This British Standard specifies the requirements for the following types of cables: two core, three core, four core or four core armored and sheathed cables with five cores and stranded copper conductors; Multi core auxiliary cable, steel wire armor and outer sheath, with stranded cable copper conductor. This British Standard specifies the performance of four types of cables in separate tests for evaluating fire resistance and fire resistance based on their characteristics, including water spray and mechanical impact fire resistance (Class F2) and a combination of direct mechanical impact and water jet evaluation of fire resistance (Class F30, F60, and F120). This British Standard applies to cable conductors designed for maximum service life with a continuous temperature of 90 ° C and a maximum short-circuit conductor temperature of 250 ° C (up to 5 seconds). Note 1: In some cases, restrictions may be imposed on the temperature of the cable where it may come into contact with or may come into contact with other materials. Note 2: Appendix A provides usage guidelines, Appendix B provides armored wire testing, Appendix C conducts compatibility testing, Appendix D conducts wear testing, Appendix E conducts insulation testing for outer sheath resistance constant testing, Appendix F provides conductors and armor, Appendix G provides the total cross-sectional area of armor, Appendix H provides testing for outer sheath shrinkage, Appendix I provides additional provisions for F2 type fire resistance testing - cables with a diameter exceeding 20 mm, Appendix J provides instructions on type testing
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