Caledonian EN 50288-7 Instrumentation and Control Cables

Multicore Colour Code

Insulation: Black numbered
Outer Sheath: Black, blue for intrinsically safe systems

Single Pair & Multipair Colour Code

Insulation: Black / White, continuously numbered on white core(1, 2..)for multipair.
Outer Sheath: Black or blue for intrinsically safe systems

Single Triple & Multitriple Colour Code

Insulation: Black / White / Red, continuously numbered on white core(1, 2..)for multitriples.
Outer Sheath: Black or blue for intrinsically safe systems