Notes on the use of PVC Insulated Wires / Cables as per BS 6004/ BS EN 50525-2-31
Polyvinyl Chloride (PVC) Compounds
Sheath colours are normally grey, black or white. Other colours can be provided on special order but experience has shown that for outdoor use, black colour has the highest resistance to direct sunlight, with other colour tending to fade in the time under these conditions.
PVC compounds used in wires and cables as per BS 6004/BS EN 50525-2-31, are described in BS EN 50363-3 / BS 7655-4.2 Several grades of compounds are detailed in these standards for both insulation and sheathing requirements. PVC compounds are thermoplastic by nature and consequently are designed to operate within a prescribed temperature range. Grades of PVC can therefore be selected to suit particular environment temperatures, with the maximum conductor temperature for heat resisting grade PVC being 90 0 C and the lowest operating temperature grade PVC below minus 30 0 C. Oman Cables also offer LSF and FRLS cables, suitable for use in fire hazards areas or where safety of human life against toxic gases is of prime importance. The majority of wiring installations, however, use a general purpose grade of PVC which has a maximum conductor operating temperature of 70 0 C; this grade of PVC wires should not be installed or flexed when the air temperature is nearing 0 0 C. A wide range of bright colours can be formulated with PVC compounds.
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MKXXS001-04/01-08-2015
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