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Four 2.5 mm² class 5 conductors — three phases plus a neutral or an earth — 50 strands of 0.25 mm each, PVC insulated and sheathed to 300/500 V. 24 A with three loaded conductors on reference method C, 18 mV/A/m, 7.98 Ω/km, about 16.6 kVA at 400 V. This is the tail for a small three-phase machine that gets moved: a bench lathe, a dough mixer, a small compressor, a portable distribution board. Drawn on the Pilone line in Lahore.
Prices track the daily copper rate. Bulk and coil pricing on request.
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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 5 flexible stranded |
| Nominal area | 2.5 mm² × 4 cores |
| Strand construction | 50 / 0.25 mm per core (typical) |
| Max conductor resistance at 20°C | 7.98 Ω/km |
| Current capacity (method C, 3 loaded) | 24 A |
| Voltage drop | 18 mV/A/m |
| Voltage rating | 300/500 V |
| Insulation / sheath | PVC / PVC, 70°C conductor rating |
| Conductor copper weight | ≈ 88.8 kg/km (4 × 22.2 kg/km) |
| Reference standards | IEC 60228 (conductors), IEC 60227 (PVC flexible cables) |
Bench lathes, dough mixers, small compressors and pedestal drills drawing up to the 24 A this cable carries.
The last few metres from an isolator to a machine that gets pushed around the workshop floor and cannot take a rigid cable.
Site boards feeding three-phase sockets, where the incoming lead is coiled and moved with the board.
Four core at this size means three phases and a fourth conductor — a neutral where single-phase circuits sit downstream, an earth where they do not. Three of the four are loaded, which is why the rating drops from the 27 A a two-core version of the same conductor carries to 24 A here. That is about 16.6 kVA at 400 V (1.732 × 400 × 24 ÷ 1000): small-machine territory, not submain territory. The buyer is usually a workshop electrician making up a machine tail, not a wireman running fixed cable in a wall — for that job class 2 standard cable is the right family. For a single-phase machine with an earth, drop to 2.5mm 3 core flexible cable; for a bigger three-phase machine, step up to 4mm 4 core flexible cable at 32 A.
Worked example — a 16 A machine 20 m from the panel.
Voltage drop is current × length × the tabulated 18 mV/A/m, divided by 1000. So 16 × 20 × 18 ÷ 1000 = 5.8 V, which is 1.4% of 400 V — inside the 5% BS 7671 allows on a power circuit, 20 V here. Load the same lead to its full 24 A and the 20 V budget is spent at 20 ÷ (24 × 18 ÷ 1000) = 46 m. Check yours with the voltage drop calculator before you cut the coil.
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