Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
Copper Flat Concentric Cable IEC Standard
Standard: IEC 60502-1 / BS 7870 / ASTM D2655 / ASTM B556 / ASTM B193 / ASTM B8 / UL 44 / UL 1581 / UL 854
Rated Voltage: 600V and below
Cable Profile: Flat (2 cores side-by-side)
Phase Conductor: Copper (7-wire stranded) OR Aluminium alloy (7/19-wire stranded)
Insulation: XLPE, 90°C continuous
Neutral: Copper wire, concentrically wound
Outer Sheath: PVC flat (XLPE/PE on request)
Sizes: 2×10 / 2×16 / 2×25 / 2×35 mm²
Max. Conductor Temperature: 90°C continuous; 250°C short-circuit
Product Overview
Copper Flat Concentric Cable (IEC Standard) is a 2-core flat-profile service entry and distribution cable consisting of two phase conductors (copper or aluminium alloy) individually XLPE insulated, assembled in a flat parallel layout, and concentrically covered with a copper wire neutral conductor wound helically around both insulated cores. Rated at 600V and below, manufactured to IEC 60502-1, BS 7870, ASTM D2655, ASTM B556, ASTM B193, ASTM B8, UL 44, UL 1581, and UL 854 — a comprehensive multi-standard certification enabling procurement for single-phase residential service connections across IEC, British Standard, and North American specification markets simultaneously.
The flat profile (two cores side-by-side rather than circular) is the defining physical characteristic of this cable versus round concentric designs. The flat format allows the cable to lie flush against building surfaces, pass more neatly through flat cable entry seals in meter panels, and be fixed with flat cable clips — providing a neater installation appearance than round concentric cable for surface-mounted service entry wiring on building facades. The concentric copper wire neutral serves the same triple function as in round concentric cable: neutral current return, electrostatic shielding, and anti-tamper protection of the phase conductors. Available with either copper phase conductors or aluminium alloy phase conductors in sizes from 2×10 mm² to 2×35 mm².
PVC Flat Outer Sheath — Black, flat profile, UV and weather resistant
Copper Wire Neutral Screen — Concentric helical wires; neutral + anti-tamper + electrostatic screen
Non-Hygroscopic Binder Tape — Binds the two flat-laid cores before neutral winding
XLPE Insulated Phase Cores — Copper or aluminium alloy conductor; 90°C rated
Flat Profile — Surface Mount Optimised
The flat two-core layout allows the cable to sit flush against wall and column surfaces — fixed with standard flat cable clips without the cable rocking or lifting that occurs with round cable clips on round concentric cable. The flat profile passes through standard flat cable entry seals in meter panel enclosures, producing a neater installation than round concentric cable in surface-mounted service entry runs.
Multi-Standard — IEC + BS + UL Certified
Simultaneous certification to IEC 60502-1, BS 7870, ASTM D2655/B556/B193/B8, UL 44, UL 1581, and UL 854 — the broadest standard coverage of any concentric service cable in this size range. A single cable product satisfies IEC-specification export projects, British Standard markets across the Commonwealth, and UL-listing requirements for the US market without specification change or re-sourcing.
Copper Phase Conductor Option
Copper phase conductors (7-wire stranded, 10–35 mm²) provide higher conductivity (100% IACS) and easier termination in residential meter sockets than aluminium alternatives — preferred where termination quality is critical and higher current density per unit cross-section is required in compact panel installations.
Aluminium Alloy Phase Conductor Option
Aluminium alloy phase conductors reduce cable weight and material cost for the same conductor cross-section — reducing installation load on surface-mounted cable clips and fixings, and lowering cable cost for longer service entry runs from the distribution network to the meter panel.
XLPE 90°C — Higher Ampacity, Longer Life
Cross-linked polyethylene insulation at 90°C continuous permits higher continuous current per unit cross-section than 70°C PVC — enabling a smaller conductor cross-section to carry the same peak residential demand load, with a longer insulation service life and better resistance to thermal ageing under sustained high-load conditions.
Anti-Tamper Concentric Neutral
The copper wire neutral wound concentrically around both phase cores creates the same anti-tamper barrier as round concentric cable — accessing the live phase conductors for an illegal bypass connection requires breaching the outer neutral layer, making tampering immediately visible. Essential for distribution utilities operating in areas with significant electricity theft risk at the service entry point.
Technical Specifications
Basic Parameters
| Standards | IEC 60502-1 / BS 7870 / ASTM D2655 / ASTM B556 / ASTM B193 / ASTM B8 / UL 44 / UL 1581 / UL 854 |
|---|---|
| Rated Voltage | 600V and below |
| Cable Profile | Flat (2 cores side-by-side in parallel layout) |
| Phase Conductor Options | Copper (7-wire stranded) or Aluminium alloy (7/19-wire stranded) |
| Insulation | XLPE (cross-linked polyethylene) — 90°C continuous conductor temperature |
| Binder | Non-hygroscopic tape over both flat-assembled cores |
| Neutral / Screen | Copper wire — concentrically wound over both insulated cores |
| Outer Sheath | PVC (flat profile); XLPE or PE available on request |
| Core Count | 2 cores (single-phase — 1 phase + neutral as concentric) |
| Conductor Sizes | 2×10 mm² / 2×16 mm² / 2×25 mm² / 2×35 mm² |
| Max. Conductor Temperature | 90°C (continuous); 250°C (short-circuit) |
| Installation | Dry and wet locations, outdoors (surface mount or conduit), direct burial underground |
| Packaging | Wooden or steel drum; standard and custom lengths available |
Full Parameter Table — Copper Flat Concentric Cable (IEC Standard)
| Size (mm²) | Conductor No./Ø (mm) | Insulation (mm) | Neutral No./Ø (mm) | Sheath (mm) | Overall Ø (mm) | Weight (kg/km) | Phase DC Resistance (Ω/km, 20°C) | Neutral DC Resistance (Ω/km, 20°C) |
|---|---|---|---|---|---|---|---|---|
| Copper Phase Conductor (IEC Standard) | ||||||||
| 2×10 | 7/1.35 | 1.55 | 20/0.85 | 1.40 | 11.80 | 290 | 1.83 | 1.90 |
| 2×16 | 7/1.70 | 1.55 | 32/0.85 | 1.40 | 12.84 | 420 | 1.15 | 1.20 |
| 2×25 | 7/2.14 | 1.60 | 29/1.13 | 1.50 | 15.02 | 630 | 0.727 | 0.76 |
| 2×35 | 19/1.53 | 1.65 | 27/1.35 | 1.60 | 17.00 | 832 | 0.524 | 0.55 |
| Aluminium Alloy Phase Conductor (IEC Standard) | ||||||||
| 2×10 | 7/1.35 | 1.55 | 23/1.13 | 1.40 | 12.41 | 192 | 3.08 | 1.335 |
| 2×16 | 7/1.70 | 1.55 | 26/1.13 | 1.40 | 13.46 | 230 | 1.91 | 1.808 |
| 2×25 | 7/2.14 | 1.60 | 29/1.13 | 1.50 | 15.08 | 290 | 1.20 | 1.059 |
| 2×35 | 19/1.53 | 1.65 | 27/1.35 | 1.60 | 17.05 | 370 | 0.868 | 0.797 |
Key Features & Technical Advantages
Flat vs Round Concentric — When to Choose Flat
Flat concentric cable is preferred for surface-mounted service entry runs on building facades, around door frames, and along wall surfaces — the flat profile lies flush with the surface, requires less wall clip depth, and has a lower profile silhouette. Round concentric cable is preferred for underground conduit runs and concealed installations where the round profile fits standard circular conduit fittings more efficiently.
IEC + BS + UL — Broadest Certification Coverage
No other concentric service cable in the 2-core 10–35 mm² range carries simultaneous IEC 60502-1, BS 7870, and UL 854 certification. This triple-standard coverage eliminates the need to re-specify or re-source cable when a project spans multiple regulatory jurisdictions — one product purchase order satisfies IEC, British Standard, and US market requirements simultaneously.
Copper Neutral — Maximum Conductivity
Copper wire neutral (100% IACS) provides the lowest neutral resistance of any concentric cable construction at equivalent neutral cross-section — minimising voltage imbalance between phase and neutral under unbalanced load conditions and providing the lowest impedance fault current return path for earth fault protection system operation.
Conductor Choice Flexibility
Both copper and aluminium alloy phase conductor variants are available in the same IEC standard for the same four sizes — allowing project engineers to specify the optimal phase conductor material based on the local regulatory environment (some jurisdictions require copper for residential service entry), termination hardware availability, and budget constraints, without changing the neutral or sheath specification.
Anti-Theft in Single-Phase Supply
Single-phase residential electricity theft is typically accomplished by bypassing the meter with a direct connection to the phase conductor. The concentric neutral completely encasing both phase cores makes this connection physically difficult to make without visible evidence of tampering — the neutral wire layer must be cut or displaced to access the phase core beneath.
Direct Burial Capability
PVC outer sheath provides adequate protection for direct burial in most soil conditions without additional conduit — enabling underground installation of single-phase service connections from padmount transformers or service pillars to residential meter panels without the additional cost of conduit material and installation.
Certifications & Standards
Typical Applications
Residential Service Entry
Single-phase connection from distribution network service point to electricity meter socket — primary application for flat concentric cable in IEC and BS-specification residential markets worldwide.
Meter to Distribution Board
Single-phase feeder from the utility meter panel to the main distribution board inside residential premises — flat profile suits surface-mounted runs along skirting boards and wall surfaces.
Surface-Mounted Runs — Building Facades
Flat cable clips hold the flat concentric cable flush against rendered and brick building surfaces — neater appearance than round cable on exposed facade service entry runs.
Anti-Theft Metering Networks
Utility networks in regions with significant residential electricity theft — IEC-certified flat concentric cable provides the same anti-tamper concentric neutral protection as round designs in a surface-mount-optimised flat format.
IEC-Market Export Projects
International residential and commercial service connection projects specifying IEC 60502-1 concentric cable — multi-standard certification satisfies project specification requirements across IEC, BS, and UL regulatory environments.
British Standard Markets
BS 7870 specification markets across the UK and Commonwealth — flat concentric cable for single-phase residential service connections in BS-regulated distribution networks.
Underground Direct Burial
Direct burial service connection from underground distribution network to residential meter panels — PVC sheath for direct burial without conduit in standard soil conditions.
Light Commercial Premises
Single-phase supply to small commercial premises, outbuildings, agricultural buildings, and light industrial units — flat concentric cable for surface or underground service connections at standard LV single-phase supply points.
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Frequently Asked Questions
As a factory, we offer flexible MOQ depending on the cable type. For standard stock items, MOQ is low; for customized specifications, please contact our sales team for a detailed quote.
Yes, Qiangli cables are manufactured in compliance with international standards such as UL, CE, TUV, and VDE. We provide full test reports and certificates upon request.
Absolutely. We have a dedicated R&D team that can customize cable structure, material, color, and printing to meet your specific project needs.
For standard products, lead time is usually 7-15 days. For large-scale project orders or customized products, it typically ranges from 20 to 30 days.
Yes, we provide free samples for most standard cables. You only need to cover the international courier costs. Contact us to arrange your sample shipment.