BS 7211:2012+A1:2020

This British Standard specifies requirements and test methods for the construction and performance of cables that: have a thermosetting insulation of rated voltage up to and including 450/750 V; emit limited amounts of smoke (see 16.6) and corrosive gases when subjected to relevant tests compared with corresponding PVC cables conforming to BS6004; are intended for electric power and lighting. The types of cable included in this British Standard are: thermosetting insulated and thermoplastic low smoke halogen free sheathed cable 450/750 V single core 6181B (see Table3); thermosetting insulated and thermoplastic low smoke halogen free sheathed circular cables 450/750 V, 2-core 6182B, 3-core 6183B, 4-core 6184B and 5-core 6185B (seeTable4); thermosetting insulated and thermoplastic low smoke halogen free sheathed cables 300/500V single-core 6241B, flat twin 6242B, flat 3-core 6243B with circuit protective conductor (seeTable5). The insulation and other components are suitable to permit operation of the cables at a maximum sustained conductor temperature of 90 °C and for a maximum short-circuit conductor temperature of 250 °C (for a maximum period of 5 s). NOTE1 Limitation on the temperature of the cables may be imposed in situations where they could be touched, or where they could touch other materials. NOTE2 In installations that include wiring accessories, junction boxes and consumer units etc., the performance of these accessories should be taken into account in deciding the maximum operating temperature of the cable. NOTE3 AnnexA provides a guide to the cross-referencing of the traditional United Kingdom Cable Codes (formerly known as the CMA codes) and harmonized CENELEC codes. Furthermore, Annex B gives information on the traditional UK cables transferred to BSEN50525. NOTE4 AnnexC gives guidance on the use of the cables specified in this British Standard. NOTE5 AnnexD gives the compatibility test method. NOTE6 AnnexE gives the voltage withstand test. NOTE7 AnnexF gives notes on type tests. NOTE8 In this British Standard, corrosive (and acid) gases are defined as those that are determined as HCl.