Sheath Color: Grey, With Yellow Green, Cable diameter: 21.1 mm, Number of Conductors:16, Conductor section: 1.5 mm2, Insulation class: 0.6/1 kV, Conductor colour: Blue/Brown/Yellow Green, Conductor: flexible annealed red copper wire, Insulation: R16 quality PVC with reduced halogen (corrosive gas) emission.