Black and red single-core DC cable coils with an inset of the stripped copper strands inside

PILONE · 4MM² · 1 CORE · CU CLASS 5 · 1000 V DC

4mm DC Solar Cable

Single-core class 5 copper conductor for solar panel and inverter wiring, PVC insulated and rated to 1000 V DC. Made on the Pilone line in Lahore.

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Prices track the daily copper rate. Coil and bulk pricing on request.

Specifications

Resistance per IEC 60228. Current capacity uses BS 7671 method C (clipped direct), 30°C ambient, as the nearest published reference for a two-conductor DC run, the positive and return pair — actual solar-circuit ampacity depends on run length, grouping, and your inverter or charge-controller rating. Verify sizing with a licensed electrician or your solar installer.
Property	Value
Conductor	Plain annealed copper, class 5 flexible stranded
Nominal area	4 mm² × 1 core
Strand construction	56 / 0.30 mm
Max conductor resistance at 20°C	4.95 Ω/km
Current capacity (two loaded conductors — DC positive and return)	36 A
Voltage drop	11 mV/A/m
Voltage rating	1000 V DC
Insulation / sheath	PVC / PVC, 70°C conductor rating
Conductor copper weight	≈ 35.6 kg/km
Reference standards	IEC 60228 (conductors), IEC 60227 (PVC cables)

This is the standard PVC-insulated construction, 70°C conductor rating. An XLPE/PVC construction rated to 90°C is also available for exposed outdoor runs — see the variant below.

Voltage drop on a 4 mm² solar run

On a DC circuit the current goes out on the positive and back on the negative. At this cable's 11 mV/A/m, the volts lost over a one-way run are:

Volts lost on 4 mm² DC cable, positive and return, at 11 mV/A/m.
Current	10 m run	20 m run	30 m run
15 A	1.65 V	3.30 V	4.95 V
20 A	2.20 V	4.40 V	6.60 V
25 A	2.75 V	5.50 V	8.25 V
30 A	3.30 V	6.60 V	9.90 V

The same loss matters more at low voltage: 3.30 V over a 10 m run at 30 A is 6.9% of a 48 V battery bank but 0.83% of a 400 V panel string. Check the loss limit your inverter maker gives, or work it through the voltage drop calculator.

Next size up or down

DC solar cable sizes either side of 4 mm², same reference conditions as the specification table.
Size	Current capacity	Voltage drop	Copper per 100 m
4 mm² (this cable)	36 A	11 mV/A/m	3.6 kg
6 mm²	46 A	7.3 mV/A/m	5.3 kg

Available as

PVC · 70°C

1 Core 4mm DC Cable

Standard PVC insulated construction for panel-to-inverter wiring.

XLPE/PVC · 90°C

4mm XLPE/PVC Solar Wire

Higher temperature XLPE inner insulation under a PVC outer, for exposed outdoor runs.

Other DC cable sizes

Two-conductor DC reference current, BS 7671 method C, 30°C ambient. Same class 5 copper construction in every size.

Frequently asked

What is the price of 4mm DC cable in Pakistan?

The price moves with the daily copper rate, so we quote it the day you order. We sell factory-direct from Lahore, with no dealer margin on top. Message us on WhatsApp for today's price per meter.

What is 4mm DC cable used for?

Panel-to-inverter wiring on residential and small commercial solar systems, and string wiring across a panel array. It is rated 36 A on the BS 7671 method C reference and 1000 V DC.

Can I get 4mm DC cable delivered?

Yes. We dispatch from Lahore — courier for single coils, transport for bulk. Punjab arrives in 1–2 days, the rest of Pakistan in 2–4 days. See delivery details.

Send us the length and your city

We quote 4mm DC cable at the day's copper rate and dispatch from the Lahore line. Tell us the construction (PVC or XLPE/PVC) and how many meters you need.