BS EN 60228 Standard specifies the nominal cross-sectional areas, in the range 0,5 mm2 to 2 500 mm2, for conductors in electric power cables and cords of a wide range of types.
Requirements for numbers and sizes of wires and resistance values are also included. These conductors include solid and stranded copper, aluminium and aluminium alloy conductors in cables for fixed installations and flexible copper conductors.
BS EN 60228 standard does not apply to conductors for telecommunication purposes.
The applicability of this standard to a particular type of cable is as specified in the standard for the type of cable.
Unless indicated to the contrary in a particular clause, BS EN 60228 standard relates to the conductors in the finished cable and not to the conductor as made or supplied for inclusion into a cable.
Informative annexes are included giving supplementary information covering temperature correction factors for resistance measurement (Annex B) and dimensional limits of circular conductors (Annex C).
The conductors have been divided into four classes, 1, 2, 5 and 6. Those in classes 1 and 2 are intended for use in cables for fixed installations. Classes 5 and 6 are intended for use in flexible cables and cords but may also be used for fixed installations.
- Class 1: solid conductors.
- Class 2: stranded conductors.
- Class 5: flexible conductors.
- Class 6: flexible conductors which are more flexible than class 5.
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