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One 4 mm² class 5 copper conductor, 56 strands of 0.30 mm, XLPE insulated with a PVC outer and rated −40°C to +90°C, 1000 V DC. This is panel-side wire, and on a roof the insulation does the hard work: it sits in full Lahore sun for years while the copper only carries string current. 4.95 Ω/km. Cut to your run length 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 5 flexible stranded |
| Nominal area | 4 mm² × 1 core |
| Strand construction | 56 / 0.30 mm (typical) |
| Max conductor resistance at 20°C | 4.95 Ω/km |
| Current capacity (reference, method C) | ≈ 36 A |
| Voltage drop | ≈ 11 mV/A/m |
| Voltage rating | 1000 V DC (typical for solar PV wire) |
| Temperature rating | −40°C to +90°C (XLPE) |
| Insulation / sheath | XLPE / PVC, UV and outdoor rated |
| Conductor copper weight | ≈ 35.6 kg/km |
| Reference standards | IEC 60228 (conductor construction) |
The buyer is a solar installer or a homeowner finishing a rooftop system, and the length wanted is usually small — the panel-to-panel jumpers, then one pair of runs from the array down to the inverter. Panels in a series string do not add current, only voltage: the short-circuit current on the label of each module, typically in the 11–14 A band for a 550–600 W panel, is what the string carries, so 4 mm² sits comfortably above one string. Where 4 mm² runs out is at the combiner, once two or three strings are paralleled onto one pair — that is a 6mm solar DC wire job. Read the labels on your own panels and the input rating of your inverter before you buy.
Module to module along the array, on the roof, exposed to sun and rain for the life of the system.
The run down from one string to a combiner or junction box, one conductor for positive and one for negative.
Single-string DC runs to an inverter or charge controller where the distance is short and the current is one string's worth.
Worked example, using the voltage drop figure in the table above. A string carrying 12 A over a 20 m run from the roof to the inverter drops 12 × 20 × 11 ÷ 1000 = 2.6 V, counting the positive and negative legs together. On a 400 V DC string that is 0.7% and invisible. On a 48 V battery-side run the same 2.6 V is 5.5%, which is why battery cable is always fatter and kept short. DC has no diversity and no power factor to hide behind: the string current flows for every sunny hour, so a drop you accept here you pay for every day.
“Excellent quality copper cables. Fast delivery across Pakistan. Highly recommended for electrical projects.”
“Best cable manufacturer in Lahore. 99.9% pure copper as promised. Very satisfied with the product quality.”
“Good quality cables at competitive prices. Delivery was quick to Karachi. Will order again.”