Building Wires — Stranded & Flexible
450/750 V — SASO IEC 60227-3

Building Wires — Stranded & Flexible

Single-core non-sheathed cable with rigid conductor for general purposes. The conductors comply with the requirements of IEC 60228 — Class 2 for stranded conductors and Class 5 for flexible conductors — and are insulated with PVC compound of Type PVC/C applied around the conductor. Maximum conductor temperature in normal use is 70°C.

  • Class 2 stranded or Class 5 flexible copper conductors (IEC 60228).
  • PVC Type C insulation rated 70°C.
  • Colours: red, yellow, blue, black, grey, brown or as per customer request.
  • Short-circuit temperature 160°C (5 s max duration).

Technical Specifications

Relevant Standard SASO IEC 60227-3 — CU/PVC
Conductor Material Plain annealed copper — Class 2 stranded / Class 5 flexible (IEC 60228)
Insulation Type C PVC (70°C)
Colour Code Red, Yellow, Blue, Black, Grey, Brown or as per customer request
Temperature Range 70°C; short-circuit 160°C (5 s max)
Conductor Resistance According to IEC 60228
Rated Voltage U0/U — 450/750 V
Test Voltage As per IEC 60227-1 — 2–2.5 kV
Packing Wooden drums or coils

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Product Data

Standard Sizes

No. of cores × size (mm²) Conductor No. × Ø (mm) Max. DC resistance @20°C (Ω/km) Insulation thickness, nom. (mm) Overall diameter, approx. (mm) Cable weight, approx. (kg/km) Current rating in air @30°C (A)
Stranded — Class 2
1 × 1.5 7 × 0.52 12.1 0.7 3.0 23 28
1 × 2.5 7 × 0.67 7.41 0.8 3.7 35 38
1 × 4 7 × 0.85 4.61 0.8 4.2 50 50
1 × 6 7 × 1.03 3.08 0.8 4.8 70 66
1 × 10 7 × 1.34 1.83 1.0 6.2 119 89
1 × 16 7 × 1.67 1.15 1.0 7.5 178 115
1 × 25 7 × 2.11 0.727 1.2 9.0 273 152
1 × 35 7 × 2.47 0.524 1.2 10.3 365 189
1 × 50 — 0.387 1.4 12.5 520 —
1 × 70 — 0.268 1.4 14.2 720 —
1 × 95 — 0.193 1.6 16.1 960 —
Flexible — Class 5
1 × 1.5 48 × 0.20 13.3 0.7 3.0 24 28
1 × 2.5 48 × 0.26 7.98 0.8 3.7 35 38
1 × 4 64 × 0.28 4.95 0.8 4.2 50 50
1 × 6 96 × 0.28 3.30 0.8 4.6 70 66
1 × 10 96 × 0.36 1.91 1.0 6.2 119 89
1 × 16 — 1.21 1.0 7.6 178 —
1 × 25 — 0.780 1.2 9.1 273 —
1 × 35 — 0.554 1.2 10.3 369 —
1 × 50 — 0.386 1.4 12.6 548 —
1 × 70 — 0.272 1.4 14.2 740 —
1 × 95 — 0.206 1.6 16.1 996 —
1 × 120 — 0.161 1.6 17.6 1210 —

Diameters and weights are approximate values.

— : not available for this size.

Correction factor for ambient temperature

Ambient temperature 25°C35°C40°C45°C50°C55°C60°C
Correction factor 1.060.940.870.790.710.610.50

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