These low voltage cables are applied for common indoor installation but not underground.
Construction
Conductor or stranded annealed copper conductor
Insulation
Extruded colored PVC, capable for the operating continuously maximum temperature of the cable
Inner Sheath
Extruded black PVC filler
Outer Sheath
Extruded white PVC suitable for the operating temperature of the cable
Identification of cores
Complying with system O/I (other colors on request)
Specification: SPLN 42-2:1992, SNI 04-2699-1999