Specification :

Voltage rating: 2491B (H05Z-K) 0.5mm2 to 1.0mm2 - 300/500V
6701B (H07Z-K) 1.5mm2 and above - 450/750V
Conductor: Flexible class 5 copper conductors to BS6360
Insulation: Type EI5 low smoke, zero halogen, thermosetting insulation
Insulation Colour: Black, Blue, Green/Yellow, Red, Yellow, White, Violet, Brown, Grey, Orange, Pink
Temperature rating: +10°C to +90°C
Minimum bending radius: Up to 10mm2 = 3 x overall diameter
10mm2 to 25mm2 = 4 x overall diameter
Standards: BS7211 H05Z-K H07Z-K Cenelec HD22.9

Nominal Cross Sectional Area
mm2 Nominal Diameter of Strands
mm Nominal Thickness of Insulation
mm Nominal Overall Diameter
mm Nominal Weight
kg/Km Conductor Resistance aAt 20°C Max.
ohms/Km Insulation Resistance at 70°C Min.
Mohms/Km
1.5 0.26 0.7 2.9 21 13.3000 0.0100
2.5 0.26 0.8 3.5 33 7.9800 0.0090
4.0 0.31 0.8 4.0 47 4.9500 0.0070
6.0 0.31 0.8 4.6 66 3.3000 0.0060
10.0 0.41 1.0 6.0 111 1.9100 0.0056
16.0 0.41 1.0 7.0 165 1.2100 0.0046
25.0 0.41 1.2 8.7 254 0.7800 0.0044
35.0 0.41 1.2 9.7 343 0.5540 0.0038
50.0 0.41 1.4 12.2 494 0.3860 0.0037
70.0 0.51 1.4 14.0 678 0.2720 0.0032
95.0 0.51 1.6 15.2 895 0.2060 0.0032
120.0 0.51 1.6 17.2 1149 0.1610 0.0029
150.0 0.51 1.8 18.9 1416 0.1290 0.0029
185.0 0.51 2.0 21.0 1724 0.1060 0.0029
240.0 0.51 2.2 25.2 2285 0.0801 0.0028