■ In dry rooms, apparatus, switch and distribution boards, for fixed installation in conduits, over and under plaster and on insulated supports over plaster. Direct laying in plaster is not permitted.
■ Minimum bending radius: 4 times of maximum overall diameter.
■ BS 6004
■ HD 21
■ Annealed copper conductor, class 1, 2 & 5.
■ PVC insulation, type TI 4.
■ Rated voltage: 450/750 V.
■ Working temperature: Max. 70°C.
■ Harmonized code designation: solid conductor: H07V3-U, stranded conductor: H07V3-R, flexible conductor: H07V3-K.
| Cross-sectional area Nom. (mm²) | No. of wires x diameter Nom. (mm) | Insulation thickness (mm) | Overall diameter (mm) | Insulation resistance at 70°C Min. (MΩ.km) | Weight Approx. (kg/km) | Conductor resistance at 20°C Max. (Ω/km) |
|---|---|---|---|---|---|---|
| 1.5 | 1 x 1.38 | 0.7 | 3.2 | 0.011 | 21 | 12.1 |
| 2.5 | 1 x 1.78 | 0.8 | 3.9 | 0.010 | 31 | 7.41 |
| 4 | 1 x 2.25 | 0.8 | 4.4 | 0.0087 | 48 | 4.61 |
| 6 | 1 x 2.76 | 0.8 | 5.0 | 0.0074 | 68 | 3.08 |
| 10 | 1 x 3.57 | 1.0 | 6.4 | 0.0072 | 112 | 1.83 |
| 1.5 | 7 x 0.52 | 0.7 | 3.3 | 0.010 | 21 | 12.1 |
| 2.5 | 7 x 0.67 | 0.8 | 4.0 | 0.0099 | 33 | 7.41 |
| 4 | 7 x 0.85 | 0.8 | 4.6 | 0.0082 | 51 | 4.61 |
| 6 | 7 x 1.04 | 0.8 | 5.2 | 0.0070 | 72 | 3.08 |
| 10 | 7 x 1.35 | 1.0 | 6.7 | 0.0067 | 118 | 1.83 |
| 16 | 7 x 1.70 | 1.0 | 7.8 | 0.0056 | 178 | 1.15 |
| 25 | 7 x 2.14 | 1.2 | 9.7 | 0.0053 | 279 | 0.727 |
| 35 | 7 x 2.52 | 1.2 | 10.9 | 0.0046 | 376 | 0.524 |
| 1.5 | 30 x 0.25 | 0.7 | 3.4 | 0.010 | 22 | 13.3 |
| 2.5 | 50 x 0.25 | 0.8 | 4.1 | 0.0095 | 34 | 7.98 |
| 4 | 56 x 0.30 | 0.8 | 4.8 | 0.0078 | 53 | 4.95 |
| 6 | 84 x 0.30 | 0.8 | 5.3 | 0.0068 | 74 | 3.30 |
| 10 | 80 x 0.40 | 1.0 | 6.8 | 0.0065 | 125 | 1.91 |
| 16 | 126 x 0.40 | 1.0 | 8.1 | 0.0053 | 194 | 1.21 |
| 25 | 196 x 0.40 | 1.2 | 10.2 | 0.0050 | 297 | 0.780 |
| 35 | 278 x 0.40 | 1.2 | 11.7 | 0.0043 | 397 | 0.554 |
