BS 6883 Fire resistant type (C)

 Design guideline : BS 6883
· Material properties :  BS 7655-1.2 (Insulation, GP4), BS 7655-2.6 (Sheath, SW4)

· Flame retardant : IEC 60332-3, Cate. 'A'
· Halogen free properties : IEC 60754-1
· Low smoke properties : IEC 61034-1/2

-Construction 
· Conductor : Circular tinned stranded copper as per BS 6360, class2
· Insulation : Ethylene Propylene Rubber (EPR) as per BS 7655-1.2

· Pair(Triple) twisting : Two(Three) cores twisted together with suitable lay length

· Cabling : with non-hygroscopic filler (if necessary)

· Collective screen : Wrapped by aluminium backed polyester tape with tinned copper drain wire
· Inner sheath : Halogen-free thermoset compound as per BS 7655-2.6, SW4
· Amour : Galvanized steel wires braid as per BS 6883 

· Outer sheath : Halogen-free thermoset compound as per BS 7655-2.6, SW4

- Core identification
· Insulation
   - Numbering on Black-White cores
· Outer sheath
   - Non IS → Grey
   - IS → Light Blue
· The any other color may be applicable when purchaser required