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Four 4 mm² class 5 conductors in one flexible sheath — three phases and a neutral — 56 strands of 0.30 mm per core. 32 A with three loaded conductors, 4.95 Ω/km, 300/500 V. This is the tail between a fixed panel and a three-phase machine: the last few metres that bend into a gland, take the vibration, and get re-coiled when the machine moves. About 22 kVA at 400 V. Made on the Pilone line in Lahore.
Prices track the daily copper rate. Bulk and coil pricing on request.
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| Property | Value |
|---|---|
| Conductor | Plain annealed copper, class 5 flexible stranded |
| Nominal area | 4 mm² × 4 cores |
| Strand construction | 56 / 0.30 mm per core (typical) |
| Max conductor resistance at 20°C | 4.95 Ω/km |
| Current capacity (method C, 3 loaded) | 32 A |
| Voltage drop | 11 mV/A/m |
| Voltage rating | 300/500 V |
| Insulation / sheath | PVC / PVC, 70°C conductor rating |
| Conductor copper weight | ≈ 142 kg/km (4 × 35.6 kg/km) |
| Reference standards | IEC 60228 (conductors, class 5), IEC 60227 (PVC flexible cables) |
Two buyers keep this size moving: the workshop wiring a three-phase machine that gets repositioned, and the panel builder making up a tail from a starter to a motor. Both are buying one jacket instead of four singles: three phases and a neutral land in a single gland, and the class 5 copper turns into that gland without springing back out of it. 32 A with three loaded conductors, clipped direct at 30°C, is about 22 kVA on a 400 V supply (1.732 × 400 × 32 ÷ 1000). That covers a small lathe, a compressor or a submersible starter. Size on the full-load amps printed on the machine plate, not the horsepower on the box, and remember a cable left coiled on its drum carries less than the same cable run out flat.
Isolator to a lathe, mixer or press that gets repositioned — the last metres that have to bend into the gland and stay bent.
Starter to a three-phase motor. Class 5 stranding takes the vibration; a class 2 conductor work-hardens and cracks inside the insulation.
Site boards and movable equipment that get dragged out and re-coiled between jobs.
Worked example, using the numbers in the table above. A machine whose plate reads 10 A, on a 15 m tail from the panel: 10 × 15 × 11 ÷ 1000 = 1.7 V of drop, against the 20 V that BS 7671's 5% allows on a 400 V power circuit — under a tenth of the budget, which is normal for a tail. At the cable's full 32 A that 20 V arrives at 20000 ÷ (32 × 11) = 57 m. Tails are rarely that long, so on this cable heat and coiling set the limit rather than distance. Check your own run with the voltage drop calculator.
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