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Four 10 mm² class 2 copper conductors, 7/1.35 mm strands per core, PVC insulated and sheathed to 450/750 V. 57 A on reference method C, 1.83 Ω/km, about 32 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.
10mm 4 core cable is quoted at the day's copper rate, per metre.
10 mm² 4 core standard cable is quoted at the day's copper rate, per metre — the rupee figure follows copper and is fixed on the day you order, so send the length in metres and your city on WhatsApp for today's number. What the rate buys does not move: three loaded conductors carrying 57 A on BS 7671 reference method C at 30°C, which is about 39 kVA on a 400 V three-phase supply.
Sellers quote this size per metre, per foot, per coil, and often as a bare number with no unit attached.
Then settle the coil. “Coil” is a container, not a quantity — 90 m, 45 m and 30 m coils are all sold in Pakistan, and some shops still sell by the yard. Get the metre count in writing before you pay. The copper column is what should be inside each length.
| Quantity | Length | Copper inside it | To get the per-metre rate |
|---|---|---|---|
| 1 metre | 1 m | 0.36 kg | Nothing to do |
| 1 foot | 0.305 m | 0.11 kg | Multiply the per-foot rate by 3.281 |
| 45 m half coil | 45 m (148 ft) | 16.0 kg | Divide the coil price by 45 |
| 90 m coil | 90 m (295 ft) | 32.0 kg | Divide the coil price by 90 |
| 100 m drum | 100 m (328 ft) | 35.6 kg | Divide the drum price by 100 |
We quote per metre against the length you send us. Search pakistan cable 25mm 4 core price, or 25mm cable, or this size, and the listings come back in three different units on one page — that is the whole problem. The cable price per meter page works through every conversion, and the cable price list sets the sizes side by side.
57 A with three loaded conductors, clipped direct at 30°C. On a 400 V three-phase supply that is about 39 kVA (1.732 × 400 × 57 ÷ 1000). It is the submain size for a shop or a single floor of a building on a three-phase connection.
| Size | Strands (class 2) | Current capacity | Voltage drop | 5% limit at full load |
|---|---|---|---|---|
| 4 mm² | 7/0.85 | 32 A | 11 mV/A/m | 57 m |
| 6 mm² | 7/1.04 | 41 A | 7.3 mV/A/m | 67 m |
| 10 mm² | 7/1.35 | 57 A | 4.4 mV/A/m | 80 m |
| 16 mm² | 7/1.70 | 76 A | 2.8 mV/A/m | 94 m |
| 25 mm² | 7/2.14 | 96 A | 1.75 mV/A/m | 119 m |
Work a real run before you buy. Voltage drop is current × length × the tabulated mV/A/m, divided by 1000. A 45 A submain over 30 m drops 45 × 30 × 4.4 ÷ 1000 = 5.9 V, which is 1.5% of 400 V — well inside the 20 V budget. Loaded to its full 57 A the same cable spends that budget at 20,000 ÷ (57 × 4.4) = 80 m. Past that distance the length picks the size, not the load. The table's top row is a different page: 25 mm cable carries 96 A, and the 25 mm 4 core copper cable price is quoted the same way, per metre at the day's copper rate.
The 57 A is for a cable clipped direct in open air at 30°C. In conduit, bundled with other circuits, or in a Lahore roof space in June it carries less. BS 7671 handles that by multiplying the tabulated figure by correction factors for ambient temperature and grouping, and the factor depends on your installation, so we publish the tabulated number and the method rather than one invented figure. Work yours with the cable size calculator and the voltage drop calculator, then have a licensed electrician confirm it.
| Property | Value |
|---|---|
| Conductor | Plain annealed copper, class 2 stranded |
| Nominal area | 10 mm² × 4 cores |
| Strand construction | 7 / 1.35 mm per core (class 2, computes to 10.0 mm²) |
| Trade strand code | 7/.052 in — 9.6 mm² computed, sold as 10 mm² |
| Max conductor resistance at 20°C | 1.83 Ω/km |
| Current capacity (method C, 3 loaded) | 57 A |
| Three-phase capacity at 400 V | ≈ 39 kVA |
| Voltage drop | 4.4 mV/A/m |
| Voltage rating | 450/750 V |
| Insulation / sheath | PVC / PVC, 70°C conductor rating |
| Conductor copper weight | ≈ 356 kg/km (4 × 88.9 kg/km) |
| Copper in a 90 m coil | ≈ 32 kg (conductor only) |
| Reference standards | IEC 60228 (conductors), IEC 60227 (PVC cables) |
Main panel to distribution boards in houses and smaller buildings on a three-phase connection, up to 57 A.
From a three-phase genset or a changeover panel back to the main board, phases and neutral in one sheath.
A rented portion, an annexe or an upper unit that keeps its own board and its own single-phase circuits.
Four core is the build for a load that needs a neutral as well as three phases — anything feeding a board with single-phase circuits on it. On a three-phase WAPDA or K-Electric connection this is the size that feeds an ordinary board rather than machinery: air conditioners, a water pump, lighting and sockets spread across the three phases. Balance them and the 57 A per phase covers a shop or a floor of a house; put a large motor on the same board and the submain wants 16 mm². Standard cable is fixed wiring: tray, trunking, conduit or clipped to a wall, indoors. If the run goes underground or crosses open ground, use armoured cable. If it has to flex or be dragged, use the class 5 build, 10mm 4 core flexible cable. For sizing a three-phase installation as a whole, start at three-phase cable size.
Core count follows the circuit, not the load. The market writes it loosely — 3 core cable, 4core cable, four core — but all it ever means is how many conductors sit inside the sheath. Four core carries three phases plus a neutral. Three core carries a single-phase circuit with its earth, or three phases with no neutral. Two core carries line and neutral with the earth run separately. The conductor is the same 10 mm² copper in all three — what changes is how many conductors are loaded, and that sets the current capacity.
| Cores | What runs in it | Loaded | Current capacity |
|---|---|---|---|
| 2 core | Line and neutral, earth run separately | 2 | 63 A |
| 3 core | Line, neutral and earth — or three phases with no neutral | 2 or 3 | 63 A / 57 A |
| 4 core | Three phases plus neutral | 3 | 57 A |
The same size in the other two builds: 10mm 3 core standard cable and 10mm 2 core cable. One step up in the same four-core build is 16mm 4 core cable at 76 A, then 25mm 4 core cable at 96 A; one step down is 6mm 4 core cable at 41 A, and on a three-phase circuit with no neutral the same 41 A comes from 6mm 3 core cable. In aluminium the same section is 7/.052 10mm 4 core aluminium cable — lighter and cheaper per metre, but it carries less current than copper for the same section.
“Full gauge” is a claim on a lot of listings and it almost never comes with a test the buyer can run. Here are three you can run yourself, on any seller's cable including ours. You need a weighing scale, a tape and a vernier.
Conductor mass = area × cores × 8.89 kg/km per mm². For 10 mm² 4 core that is 10 × 4 × 8.89 = 356 kg/km, so a 90 m coil holds about 32 kg of copper before insulation and sheath.
Cut the end square. A 10 mm² class 2 core is 7 strands of about 1.35 mm. Fewer strands, or a thinner strand, means a smaller conductor whatever the sheath is printed with.
Get the metre count in writing before you pay, then check it with a measuring wheel. A short coil is the quietest way a per-coil price stops being the price you calculated.
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