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Single-core class 5 copper conductor for DC feeder runs on large commercial solar installations. PVC insulated, rated to 1000 V DC. Made on the Pilone line in Lahore.
Prices track the daily copper rate. Coil and bulk pricing on request.
| Property | Value |
|---|---|
| Conductor | Plain annealed copper, class 5 flexible stranded |
| Nominal area | 35 mm² × 1 core |
| Strand construction | 276 / 0.40 mm |
| Max conductor resistance at 20°C | 0.554 Ω/km |
| Current capacity (two loaded conductors — DC positive and return) | 138 A |
| Voltage drop | 1.25 mV/A/m |
| Voltage rating | 1000 V DC |
| Insulation / sheath | PVC / PVC, 70°C conductor rating |
| Conductor copper weight | ≈ 311.2 kg/km |
| Reference standards | IEC 60228 (conductors), IEC 60227 (PVC cables) |
On a DC circuit the current goes out on the positive and back on the negative. At this cable's 1.25 mV/A/m, the volts lost over a one-way run are:
| Current | 10 m run | 20 m run | 30 m run |
|---|---|---|---|
| 50 A | 0.63 V | 1.25 V | 1.88 V |
| 63 A | 0.79 V | 1.58 V | 2.36 V |
| 80 A | 1.00 V | 2.00 V | 3.00 V |
| 100 A | 1.25 V | 2.50 V | 3.75 V |
The same loss matters more at low voltage: 1.25 V over a 10 m run at 100 A is 2.6% of a 48 V battery bank but 0.31% of a 400 V panel string. Check the loss limit your inverter maker gives, or work it through the voltage drop calculator.
| Size | Current capacity | Voltage drop | Copper per 100 m |
|---|---|---|---|
| 25 mm² | 112 A | 1.75 mV/A/m | 22.2 kg |
| 35 mm² (this cable) | 138 A | 1.25 mV/A/m | 31.1 kg |
Two-conductor DC reference current, BS 7671 method C, 30°C ambient. Same class 5 copper construction in every size.
We quote 35mm DC cable at the day's copper rate and dispatch from the Lahore line. Tell us the construction and how many meters you need.