BS 7889:2012

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Rated voltage
5 Conductors
6 Insulation
7 Identification of cores
8 Laying up
9 Extruded optional inner covering
10 Sheath
11 Cable marking and additional information
12 Schedule of tests
13 Test conditions
14 Routine tests
15 Sample tests
16 Type tests
Annexes
Annex A (informative) - Guide to use
Annex B (normative) - Compatibility test
Annex C (normative) - Abrasion test
Annex D (informative) - Notes on type tests
Annex E (normative) - Green-and-yellow measurement
        for shaped conductors
Bibliography

Describes requirements and test methods for the construction and performance of non-armoured cables with thermosetting insulation of rated voltages 600/1000 V.

This British Standard specifies requirements and test methods for the construction and performance of non-armoured cables with thermosetting insulation of rated voltages 600/1000V. Cables specified in this British Standard are intended for use in fixed installations in industrial areas, buildings and similar applications but not for burial in the ground, either directly or in ducts.

The cables specified in the standard are all stranded copper conductor, thermosetting insulated, PVC sheathed types. There are single-core types, and multi-core types (2-, 3-, 4- and 5-core).

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 5s).

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 gives guidance on the use of these cables, AnnexB gives the compatibility test, AnnexC gives the abrasion test, AnnexD gives notes on type tests and AnnexE gives green-and-yellow measurement for shaped conductors.