Factory-Direct Supply of Certified Wires and Conductors for Diverse Industrial Applications
3 Core Aluminium Round Concentric Cable
Standard: NTP IEC 60502-1 (Peruvian National Standard)
Rated Voltage: 600V and below
Phase Conductor: AAC — plain annealed stranded aluminium (7/1.35 mm for 10 mm²; 7/1.70 mm for 16 mm²)
Insulation: XLPE, 90°C continuous — Black / Red / White
Binder: Non-hygroscopic tape
Neutral Conductor: 8000 series aluminium alloy (AA-8000) — concentric helical wires
Outer Sheath: PVC (XLPE or PE available on request)
Sizes: 3×10/10 mm² (OD 18.7 mm, 355.4 kg/km) / 3×16/16 mm² (OD 21.2 mm, 465.7 kg/km)
Max. Conductor Temperature: 90°C continuous; 250°C short-circuit
Product Overview
3 Core Aluminium Round Concentric Cable is a three-phase service entry and distribution cable consisting of three aluminium phase conductors (AAC, circular stranded) individually insulated with XLPE, assembled into a round configuration, and concentrically covered with an 8000 series aluminium alloy neutral conductor wound helically around all three insulated cores. It is rated at 600V and below and manufactured to NTP IEC 60502-1 — the Peruvian national standard (Norma Técnica Peruana) adoption of IEC 60502-1, making it the standard concentric service cable specification for Peru and other Latin American markets where NTP standards govern electrical distribution procurement.
The cable is designed for use as a service entrance cable from the power distribution network to the electricity meter panel, and as a feeder cable from the meter panel to the distribution panel — the two most critical connection points in residential and commercial service entry wiring. The concentric aluminium alloy neutral conductor wound around the phase cores provides effective anti-theft protection: the outer neutral layer must be intact to complete the circuit, making it immediately apparent when the cable has been tampered with, and the alloy construction makes the neutral wires difficult to separate and sell as scrap material. The cable is suitable for installation in dry and wet locations, outdoors, and directly buried underground. Available in two standard sizes: 3×10 mm² (3×10AWG) and 3×16 mm² (3×16AWG).
PVC / XLPE / PE Outer Sheath — Weather and UV resistant, suitable for direct burial
8000 Series Al Alloy Neutral — Concentric helical wires; neutral conductor + anti-tamper layer
Non-Hygroscopic Tape Binder — Holds cores in round assembly before neutral winding
XLPE Insulated AAC Cores — Black, Red, White; circular stranded aluminium conductor
Anti-Tamper / Anti-Theft Design
The concentric neutral wires encasing the three phase cores create an inherent anti-tamper structure — accessing the live phase conductors requires cutting or unravelling the neutral layer, making any tampering or illegal connection immediately visible to utility inspection crews. Widely specified in Latin American distribution networks where electricity theft at the service entrance is a significant operational problem.
NTP IEC 60502-1 — Peruvian Standard
Full compliance with the Peruvian national electrical standard (Norma Técnica Peruana) adoption of IEC 60502-1 — mandatory for electrical distribution cables installed in Peru and accepted in other Latin American markets where NTP or IEC 60502-1 governs service entry cable procurement by OSINERGMIN-regulated distribution concessionaires.
8000 Series Aluminium Alloy Neutral
The concentric neutral is wound from 8000 series aluminium alloy wire (AA-8000, Al-Fe-Cu alloy) — providing higher tensile strength and better creep resistance than commercially pure 1350 aluminium at the same cross-section. 8000 series alloy is approved for use as a neutral conductor in service entry applications by major Latin American utility specifications and the US NEC Article 310.
XLPE Insulation — 90°C Service Temperature
Cross-linked polyethylene insulation rated to 90°C continuous conductor temperature — providing higher current capacity than PVC-insulated cable of equivalent conductor cross-section. The 90°C rating allows higher loading during peak demand periods without exceeding safe insulation temperature limits, avoiding premature cable ageing.
Round Profile — Conduit Compatible
The round cable assembly (as opposed to flat/sector concentric designs) is the standard configuration for installation through standard circular conduit fittings, cable clamps, and meter panel entry glands — directly compatible with the round conduit infrastructure of Latin American residential service entry installations without special fittings.
Wet / Dry / Direct Burial Suitable
PVC outer sheath (XLPE or PE also available) provides protection for installation in wet and dry indoor locations, external building surfaces exposed to weather, and direct burial underground — covering all standard residential and commercial service entry installation methods without requiring additional conduit or mechanical protection in most cases.
Technical Specifications
Basic Parameters
| Standard | NTP IEC 60502-1 (Peruvian national standard adoption of IEC 60502-1) |
|---|---|
| Rated Voltage | 600V and below |
| Cable Type | 3-core round concentric — 3 phase conductors + concentric neutral |
| Phase Conductor | AAC — plain annealed stranded aluminium (circular), 7 wires |
| Insulation | XLPE — cross-linked polyethylene, 90°C continuous |
| Insulation Colours | Black, Red, White (three phase cores) |
| Binder | Non-hygroscopic tape over assembled cores |
| Neutral Conductor | 8000 series aluminium alloy (AA-8000) — concentric helical wires wound over all three insulated cores |
| Outer Sheath | PVC (XLPE or PE also available on request) |
| Max. Conductor Temperature | 90°C (continuous); 250°C (short-circuit) |
| Installation | Indoors / outdoors, wet or dry, direct burial underground, in conduit |
| Sizes Available | 3×10 mm² (3×10AWG) and 3×16 mm² (3×16AWG) |
| Packaging | Wooden or steel drum; standard and custom lengths available |
Parameter Table — 3 Core Aluminium Round Concentric Cable
| Cable Size (mm²) | Phase Conductor (No./mm) | XLPE Insulation (mm) | Neutral Conductor (No./mm) | Neutral Calculated Area (mm²) | PVC Sheath (mm) | Overall Ø (mm) | Cable Weight (kg/km) |
|---|---|---|---|---|---|---|---|
| 3×10 / 10 | 7/1.35 | 0.7 | 51/0.50 | 10 | 1.6 | 18.7 | 355.4 |
| 3×16 / 16 | 7/1.70 | 0.7 | 56/0.60 | 16 | 1.6 | 21.2 | 465.7 |
Key Features & Technical Advantages
Concentric Neutral — Integrated Circuit Protection
The 8000 series alloy neutral wires wound around all three phase cores serve simultaneously as the system neutral conductor, an electrostatic screen reducing induced interference, and a visible tamper indicator. Any attempt to bypass the meter or make an illegal connection requires breaching the neutral layer — creating an immediately detectable evidence trail for utility inspection.
8000 Series Alloy — Approved for Neutral Duty
AA-8000 aluminium-iron-copper alloy has higher tensile strength (≥138 MPa annealed) and significantly better creep resistance than 1350-H19 aluminium at equivalent cross-section — maintaining tight contact pressure in mechanical connectors at utility service connection points where vibration and thermal cycling cause pure aluminium to creep and loosen over time.
Full Neutral Capacity — Phase-Equal Sizing
The concentric neutral calculated area (10 mm² for 3×10 mm² cable; 16 mm² for 3×16 mm²) matches the phase conductor cross-section — providing full neutral current carrying capacity equal to the phase conductors. In three-phase distribution systems with significant harmonic content (common in modern residential loads with switch-mode power supplies), a full-capacity neutral is essential to prevent neutral overheating.
Latin American Service Entry Standard
Concentric service cable is the standard service entry cable format for Peruvian, Ecuadorian, Colombian, and other Latin American residential and commercial electrical connections — required by local distribution utility specifications for anti-theft metering connections where the concentric neutral creates an inherent seal around the phase conductors at the meter socket.
Non-Hygroscopic Tape Binder
The non-hygroscopic (moisture-resistant) binder tape over the assembled phase cores prevents moisture wicking along the cable length if the sheath is damaged — particularly important for direct burial installations and outdoor weather-exposed runs where water ingress along the cable core could cause insulation degradation and earth fault conditions over time.
XLPE Insulation Durability
Cross-linked polyethylene maintains its mechanical and dielectric properties over a 40+ year service life even at 90°C continuous operation — superior to PVC which undergoes progressive plasticiser migration and brittling over long service periods. XLPE insulation retains flexibility and dielectric strength throughout the design life of the cable installation without replacement.
Certifications & Standards
Typical Applications
Residential Service Entry
Three-phase service connection from the distribution network to the electricity meter socket — the primary application for 3-core concentric cable in Peruvian and Latin American residential construction.
Meter Panel to Distribution Panel
Feeder cable from the utility meter panel to the main distribution board inside residential and light commercial premises — providing a tamper-evident connection for the metered circuit.
Commercial Building Service Entry
Three-phase service connection to commercial premises — offices, retail, restaurants, and small industrial facilities where three-phase supply is required at the standard 600V service voltage.
Peruvian Distribution Networks
Standard service entry cable for Peru's distribution concessionaires (Luz del Sur, Enel Peru, Electro Ucayali, and others) — NTP IEC 60502-1 concentric cable is the required format for anti-theft metering connections.
Latin American Utilities
Service entry cable for Ecuador, Colombia, Bolivia, and other Latin American utilities specifying concentric neutral construction for residential and commercial meter connections.
Direct Burial Service Runs
Underground service connection from pole-mounted transformer or padmount distribution transformer to residential meter sockets — direct burial without additional conduit in standard soil conditions.
New Housing Developments
Electrical service connections for new residential subdivisions in Peru and Latin America — concentric cable installed during construction before wall finishing, providing permanent tamper-resistant service connections.
Meter Bypass Prevention
Anti-tampering metering infrastructure in areas with high electricity theft risk — the concentric neutral construction makes illegal meter bypass connections significantly more difficult to conceal from utility inspection.
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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.