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BS 7211:2012+A1:2020

BS 7211:2012+A1:2020

$167.15

Electric cables. Thermosetting insulated and thermoplastic sheathed cables for voltages up to and including 450/750 V for electric power and lighting and having low emission of smoke and corrosive gases when affected by fire

Published By Publication Date Number of Pages
BSI 2020 34
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This British Standard specifies requirements and test methods for the construction and performance of cables that:

  1. have a thermosetting insulation of rated voltage up to and including 450/750 V;

  2. emit limited amounts of smoke (see 16.6) and corrosive gases when subjected to relevant tests compared with corresponding PVC cables conforming to BS 6004;

  3. 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 Table 3);

  • 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 (see Table 4);

  • thermosetting insulated and thermoplastic low smoke halogen free sheathed cables 300/500 V single-core 6241B, flat twin 6242B, flat 3-core 6243B with circuit protective conductor (see Table 5).

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).

NOTE 1 Limitation on the temperature of the cables may be imposed in situations where they could be touched, or where they could touch other materials.

NOTE 2 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.

NOTE 3 Annex A 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 BS EN 50525.

NOTE 4 Annex C gives guidance on the use of the cables specified in this British Standard.

NOTE 5 Annex D gives the compatibility test method.

NOTE 6 Annex E gives the voltage withstand test.

NOTE 7 Annex F gives notes on type tests.

NOTE 8 In this British Standard, corrosive (and acid) gases are defined as those that are determined as HCl.

PDF Catalog

PDF Pages PDF Title
4 Foreword
7 1 Scope
2 Normative references
8 3 Terms and definitions
9 4 Rated voltage
Table 1 — Maximum permitted voltages against rated voltage of cable
5 Construction
10 6 Conductors
7 Insulation system
11 8 Identification of cores
9 Multi-core circular cables
12 10 Optional extruded inner covering
11 Sheath
13 12 Cable marking and additional information
14 Figure 1 — An example of the marking as used on the outer sheath of the cable
15 13 Schedule of tests
Table 2 — Schedule of tests
16 14 Test conditions
15 Routine tests
17 16 Sample tests
18 17 Type tests
20 Table 3 — Thermosetting insulated, single-core, sheathed cables 6181B, 450/750 V
21 Table 4 — Thermosetting insulated, circular 2-core 6182B, 3-core 6183B, 4-core 6184B, 5-core 6185B sheathed cables, 450/750 V
23 Table 5 — Thermosetting insulated, single core 6241B, flat twin 6242B and flat 3-core 6243B sheathed cables with circuit protective conductor (CPC) 300/500 V
24 Annex A (informative)  Coding cross references
Table A.1 — UK and harmonized CENELEC coding cross references
Annex B (informative)  Traditional UK cables transferred to BS EN 50525
Table B.1 — Halogen free, low smoke, conduit cable 450/750 V: formerly in BS 7211
25 Table B.2 — Halogen free, low smoke, flexible conduit cable 450/750 V: formerly in BS 7211
26 Table B.3 — Halogen free, low smoke, conduit cable 300/500 V: formerly in BS 7211
Table B.4 — Halogen free low smoke flexible conduit cable 300/500 V: formerly in BS 7211
Annex C (informative)  Guide to use
27 Table C.1 — Constructional details, methods of installation and temperature for Table 3 to Table 5
28 Table C.2 — Guide to use
Annex D (normative)  Compatibility test
29 Table D.1 — Compatibility requirements
Annex E (normative)  Method of test for voltage withstand
30 Annex F (informative)  Notes on type tests
32 Bibliography
BS 7211:2012+A1:2020
$167.15