Description
⚡ India's Most Trusted Solar DC Cable — Built for Rooftop Solar Systems
The Polycab 4 Sq.mm Solar DC Cable (100 Meters) is the go-to choice for solar installers and homeowners across India. Engineered specifically for solar PV applications, it handles high DC voltages and outdoor conditions with ease — ensuring your solar system performs safely for decades.
✅ Polycab Brand | ✅ 100 Meter Roll | ✅ UV & Weather Resistant | ✅ High Current Capacity
⚙️ Technical Specifications
| Specification | Details |
| Brand | Polycab |
| Cross-Sectional Area | 4 Sq.mm |
| Cable Length | 100 Meters (full roll) |
| Current Carrying Capacity | 55 Amps |
| Application | Solar PV DC wiring (panel to inverter) |
| Insulation | UV-resistant, weather-proof outer sheath |
| Voltage Rating | Suitable for standard solar DC systems (up to 1500V DC) |
| Temperature Range | -40°C to +90°C |
| Conductor Material | Tinned copper (corrosion resistant) |
💡 Why 4 Sq.mm is the Right Choice for Solar
- Handles up to 55A — suitable for most residential and commercial solar systems up to 10 KW
- Minimizes power loss — thicker cable = lower resistance = more energy reaching your inverter
- UV-resistant sheath — designed to withstand years of direct sunlight on rooftops
- Tinned copper conductor — resists corrosion in humid and coastal environments
- Flexible and easy to route — bends easily around mounting structures and conduits
🔧 How to Use This Cable in Your Solar Installation
- Panel to Combiner Box: Run individual panel strings to a DC combiner box using this cable.
- Combiner Box to Inverter: Connect the combined DC output to your solar inverter.
- Use MC4 Connectors: Terminate cable ends with MC4 connectors for weatherproof connections.
- Secure with Cable Ties: Route and secure cables along the mounting structure to prevent wind damage.
- Avoid Sharp Bends: Maintain a minimum bend radius to prevent insulation damage.
📌 Tip: For a 10 KW system with 25 panels, you'll typically need 100–150 meters of DC cable. This 100m roll covers most standard installations.
🏠 Which Solar Systems Is This Compatible With?
- All off-grid and on-grid solar rooftop systems
- Compatible with Luminous, Waaree, Adani, Tata, and all major solar inverters
- Suitable for 1 KW to 10 KW+ residential and commercial systems
❓ Frequently Asked Questions
Q: Can I use this cable for both positive and negative DC lines?
A: Yes. Use one roll for positive and one for negative runs, or split a single roll between both depending on your system layout.
Q: Is 4 Sq.mm sufficient for a 10 KW system?
A: Yes, 4 Sq.mm cable rated at 55A is suitable for most 10 KW residential systems. For very long cable runs (over 30 meters), consider 6 Sq.mm to minimize voltage drop.
Q: Does this cable come with MC4 connectors?
A: This listing is for the cable only. MC4 connectors are sold separately.
Q: Is Polycab a reliable brand for solar cables?
A: Absolutely. Polycab is one of India's largest and most trusted cable manufacturers, widely used by professional solar installers across the country.
Q: How long does delivery take?
A: Delivery typically takes 3–7 business days. Pan-India delivery available.
📦 Order now and get your solar wiring sorted — fast delivery, genuine Polycab quality, pan-India shipping.