Aug. 12, 2025
When your installations demand a cable that balances high current‑carrying capacity, mechanical flexibility, and long‑term reliability, you need 4mm copper cable wire engineered and supplied by experts. Whether wiring residential circuits, solar arrays, motor feeders, or battery banks, our 4 mm copper cable wire delivers:
Oxygen‑Free Copper Conductors with low resistance and superior ampacity
Fine‑Strand Class 5 Stranding for bend‑radius as low as 6× overall diameter
PVC, XLPE, or TPE Insulation rated up to 600 V AC / 1 000 V DC and –40 °C to +105 °C or higher
Full Compliance with IEC 60228, BS 6004, UL 758, and RoHS/REACH standards
End‑to‑End Service: custom lengths, color coding, pre‑terminated lugs, and local support
Below, discover why our 4mm copper cable wire stands apart, how to select the right variant, and why partnering with us ensures your project stays on time, on budget, and failure‑free.
Choosing the right 4mm copper cable wire is more than picking a gauge—it’s ensuring safety, efficiency, and longevity:
Superior Electrical Performance
Oxygen‑free copper reduces resistive losses, minimizing voltage drop on long runs.
4 mm² conductors reliably carry up to ~32 A (AC) at +30 °C ambient per IEC tables.
Optimized Flexibility & Installation Ease
Class 5 fine‑strand stranding enables tight conduit bends and smooth tray routing.
Bend radius down to 6× overall diameter simplifies complex cable pathways.
Robust Insulation Systems
PVC: cost‑effective for general indoor wiring up to +105 °C.
XLPE: higher dielectric strength and temperature tolerance (+90 °C continuous).
TPE: extreme flexibility and UV/oil resistance for outdoor or machinery‑chain use.
Reliability & Safety
Batch‑traceable high‑pot and continuity testing ensures defect‑free deliveries.
Compliance with global standards (UL, BS, IEC) passes all inspections and audits.
Investing in quality 4mm copper cable wire upfront prevents failures, reduces energy costs, and eliminates rework.
| Feature | Benefit |
|---|---|
| Conductor: 4 mm² OFC/Tinned | Low resistance, high corrosion resistance; up to 32 A ampacity |
| Stranding: Class 5 | High flexibility; tight bend‑radius (6× OD) in conduit and trays |
| Insulation: PVC / XLPE / TPE | Choose per environment—indoor, high‑temp, UV, or oil‑exposed areas |
| Voltage Rating: 300/500 V–600 V AC | Versatile for household, industrial, and solar/inverter circuits |
| Temperature Range: –40 °C to +105 °C (PVC) / +90 °C (XLPE) / +125 °C (TPE) | Reliable across climates and equipment |
| Standards: IEC 60228, BS 6004, UL 758, RoHS/REACH | Guaranteed compliance and inspection approval |
| Custom Options | Color jackets, printed legends, pre‑terminated lugs, custom lengths |
Each meter of our 4mm copper cable wire is engineered and tested to exceed industry demands.
Residential & Commercial Power Circuits
4 mm² PVC‑insulated copper wire for ring final circuits, lighting, and socket circuits—meets BS 7671 requirements for fixed wiring.
Solar Array & Inverter Feeds
XLPE‑insulated 4 mm copper cable wire in DC runs from panels to combiner boxes (1 000 V rating) and AC output to distribution boards.
Motor & Machinery Power Leads
TPE‑insulated 4 mm copper cable wire in dynamic cable chains and machine tools—resists oils, UV, and repeated flex cycles.
Battery Bank & UPS Interconnects
Tinned‑copper 4 mm wire for battery linking in off‑grid or UPS systems—resists corrosion in humid battery rooms.
“Switching to this 4 mm copper cable wire cut our voltage‑drop issues on long feeder runs by 50%, boosting system efficiency.”
—Priya S., Electrical Engineer, SolarWorks LLC
“Their TPE‑insulated 4 mm flex cables held up under continuous machine‑chain motion—no more cable replacements upstream.”
—Marcus L., Maintenance Supervisor, AutoFabrication Ltd.
Confirm Current & Voltage Needs
Reference ampacity tables: 4 mm² copper at +30 °C → ~32 A (single core).
Choose insulation rating ≥ 1.2× maximum circuit voltage.
Select Insulation Type
PVC for dry, general‑purpose indoor wiring.
XLPE for high‑temperature or direct burial applications.
TPE for extreme flexibility, UV/oil/chemical exposure, and cable‑carrier use.
Decide Conductor Finish
Bare OFC for dry, controlled environments.
Tinned Copper for humidity, marine, or chemical‑exposed installations.
Evaluate Mechanical Requirements
Class 5 stranding for static runs.
Class 6 if subject to frequent movement or reel spooling.
Specify Value‑Adds
Pre‑terminated lugs or ring‑terminals for rapid field installation.
Custom color jackets and legends for circuit identification.
Our technical team provides ampacity charts, bend‑radius calculators, and onsite support to ensure your 4mm copper cable wire selection is perfect.
Maintain Minimum Bend Radius
Keep bends ≥ 6× overall cable diameter (static) and ≥ 8× for dynamic movement to avoid conductor fatigue.
Use Proper Terminations
Match lug barrel size to 4 mm² conductors; crimp tools must be rated for fine‑strand copper.
Secure & Protect
Install cable in conduit, trays, or protective flex conduits; avoid sharp edges and abrasion points.
Test After Installation
Perform continuity, polarity, and insulation‑resistance (megger) tests before energizing circuits.
Document & Label
Apply durable markers at both ends; maintain as‑built cable schedules for maintenance.
Following these steps ensures your 4mm copper cable wire installations remain safe and reliable.
Decades of Expertise
Over 30 years perfecting conductor drawing, stranding, and insulation compounding for mission‑critical cables.
Stringent Quality Control
ISO 9001 and UL‑approved processes; 100% testing on every spool with batch‑traceable certificates.
Global Manufacturing with Local Support
Regional warehouses in Asia, Europe, and North America ensure rapid supply and on‑site technical assistance.
Custom Engineering & Rapid Prototyping
From novel insulation compounds to integrated sensor cores and over‑molded assemblies, our R&D tailors solutions in days.
Sustainability & Compliance
RoHS/REACH‑compliant materials, recyclable insulation options, and closed‑loop scrap recycling support your ESG goals.
Partnering with us means you gain a 4mm copper cable wire specialist committed to your project’s success—long after installation.
Requirements Capture
Share current, voltage, environment, and length via our portal or hotline—receive tailored recommendations within 4 hours.
Custom Quote & Samples
Detailed datasheets, ampacity charts, and sample lengths delivered within 24 hours.
Approve & Schedule Production
Stocked 4 mm copper cable wire ships in 3–5 business days; custom compounds or pre‑terminated assemblies delivered in 7–10 business days.
Global Logistics & Tracking
Choose DDP, CIF, or EXW terms; track your order in real time from factory to your site.
Post‑Delivery Support
On‑site commissioning, splicing services, and a 24/7 technical hotline ensure smooth deployment and ongoing reliability.
Our end‑to‑end process guarantees your 4mm copper cable wire arrives on time, on budget, and ready to perform.
24/7 Technical Hotline
Our conductor experts are available around the clock to answer specification, installation, and troubleshooting queries.
Comprehensive Warranty
We back every spool with a two‑year workmanship and materials warranty; extended coverage up to 10 years available.
Preventive Maintenance Programs
Schedule periodic IR testing, thermal‑imaging audits, and mechanical inspections to catch wear trends before failures occur.
Knowledge Portal
Access whitepapers, installation videos, spec calculators, and best‑practice guides anytime via our online platform.
Empower your next project with our expertly engineered 4mm copper cable wire—built for endurance, performance, and backed by world‑class support.
Contact us today for a free consultation, custom spec sheet, and rapid quote—and experience the difference that premium 4 mm copper cable wire makes.
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