These are PVC insulated for voltages up to and including 450/750V and are suitable for electrical power, lighting and internal wiring.
Conductors are plain copper Class 5 (flexible)
They are manufactured to BS EN 50525-2-31.
Conductors up to and including 1mm² are rated at 300/500V.
Conductors 1.5mm² and larger are rated at 450/750V.
Sizes 0.5 to 2.5mm² inclusive are BASEC certified