Three 25 mm² class 2 copper conductors, 7 strands of 2.14 mm per core, PVC insulated and sheathed to 450/750 V. 96 A with three loaded conductors on reference method C, 0.727 Ω/km, 1.75 mV/A/m — about 66 kVA on a 400 V three-phase supply. This is the three-phase feeder that carries no neutral: starter panel to tubewell motor, compressor or lift machine room. About 60 kg of copper in a 90 m coil. Drawn on the Pilone line in Lahore.
Prices track the daily copper rate. Bulk and coil pricing on request.
Check the coil before you pay for it
Every coil leaves our factory with a QR code printed on the packaging. Scan it and the factory record for that batch opens: brand, cable size, batch number, year of manufacture and conductor. Compare the batch number on screen with the one printed on your coil — if the two do not match, it did not come from us.
| Property | Value |
|---|---|
| Conductor | Plain annealed copper, class 2 stranded |
| Nominal area | 25 mm² × 3 cores |
| Strand construction | 7 / 2.14 mm per core (typical) |
| Max conductor resistance at 20°C | 0.727 Ω/km |
| Current capacity (method C, 3 loaded) | 96 A |
| Voltage drop | 1.75 mV/A/m |
| Voltage rating | 450/750 V |
| Insulation / sheath | PVC / PVC, 70°C conductor rating |
| Conductor copper weight | ≈ 666.9 kg/km (3 × 222 kg/km) |
| Reference standards | IEC 60228 (conductors), IEC 60227 (PVC cables) |
Starter panel to a three-phase tubewell or booster motor. The motor takes three phases and an earth at the frame — no neutral goes down the run.
Fixed supply to a workshop lathe, an air compressor or a textile machine drawing up to the 96 A this cable carries.
Panel to panel where every circuit downstream is three-phase, so the neutral has nothing to return and can be left out.
The buyer for this build is almost always doing one job: getting three phases to a motor. A tubewell contractor, a factory maintenance electrician, a lift installer. Three core at 25 mm² carries the three phases and nothing else — the earth goes to the frame separately, which is normal practice on motor work and is why the 4-core version would just be a spare conductor sitting in the sheath. Where the load downstream is a mix of single-phase circuits, the neutral has to be there and the right cable is 25mm 4 core cable. For a single-phase incomer, 25mm 2 core standard cable at 112 A. One step down in the same three-core build is 16mm 3 core cable at 76 A, and the sizing question in general is worked through on the three-phase cable size page.
Worked example — a 70 A motor 45 m from the starter.
Voltage drop is current × length × the tabulated 1.75 mV/A/m, divided by 1000. So 70 × 45 × 1.75 ÷ 1000 = 5.5 V, which is 1.4% of 400 V — well inside the 5% BS 7671 allows on a power circuit, 20 V here. Load the same cable to its full 96 A and the 20 V budget is spent at 20 ÷ (96 × 1.75 ÷ 1000) = 119 m. Beyond that the run length picks the size, not the motor — check yours with the voltage drop calculator.
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