Single Phase Concentric Aluminum Cable
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Single Phase Concentric Aluminum Cable
Single-phase concentric aluminum cable – built for reliable residential supply.
Compact design with aluminum conductor and neutral for stable power flow.
Ideal for service entrances and utility connections.
Lightweight, corrosion-resistant, and easy to install.
Cost-effective solution for overhead and underground single-phase systems.
Application
Single Phase Concentric Aluminum Cable is specially designed for low-voltage single-phase power distribution, combining efficient current transmission with built-in neutral and grounding functionality. It features a solid or stranded aluminum conductor at the core, surrounded by a layer of concentric neutral wires—typically aluminum or aluminum alloy—ensuring both power delivery and fault current return within one compact cable.
This construction simplifies installation by eliminating the need for separate phase and neutral cables, making it ideal for residential service drops, pole-mounted transformers, and utility metering systems. The cable is typically insulated with PVC or XLPE, offering reliable electrical insulation, UV resistance, and weather durability for outdoor aerial or underground use.
Its design ensures excellent short-circuit performance, low reactance, and balanced load characteristics in single-phase systems. The concentric neutral also provides added mechanical protection and improves safety by supporting equipotential grounding.
Specifications
| Category | Technical Description | Typical Applications |
|---|---|---|
| Cable Type | Low-voltage single-phase power cable featuring a central aluminum phase conductor surrounded by a concentric neutral layer of aluminum wires | Commonly used for overhead and underground service drops, especially in residential areas |
| Conductor Material | – Central conductor: solid or stranded aluminum (1350 series)– Concentric layer: helically applied aluminum wires serving as neutral and mechanical protection | Offers a balance between cost, conductivity, and corrosion resistance |
| Construction | – Central aluminum phase core- Concentric neutral/ground of bare or insulated aluminum wires- Optional PVC or XLPE insulation over the phase core | Compact and durable structure ideal for direct burial or aerial installation |
| Voltage Rating | Typically rated for 600 V or 0.6/1 kV, suitable for residential and light commercial power connections | Used in utility networks for delivering power from distribution transformers to homes |
| Standards Compliance | Meets specifications such as ICEA S-95-658, NEMA WC 70, UL 854, and ANSI/ICEA standards | Approved for utility-grade installations and compliant with building codes |
Parameter
Type I: PVC Insulated Single phase concentric aluminum cable with copper communication pair
| Property | Cable sizes | |||||
| Phase Conductor | Nominal area, mm， | 10 | 16 | 25 | 35 | |
| Form of conductors | Circular/compacted circular stranded | |||||
| No. & approx, dia. of wires, No./mm | 7/1.35 | 7/1.70 | 7/2.14 | 7/2.52 | ||
| Min-Max. dia of completed conductors, mm | * | 4.6-5.2 | 5.6-6.5 | 6.6-7.6 | ||
| Nominal diameter of conductors, mm | 4.05 | 5.1 | 6.42 | 7.56 | ||
| Minimum thickness of insulation mm | 1.55 | 1.55 | 1.6 | 1.65 | ||
| Concentric neutral Approx, no. of wires | 7 | 11 | 14 | 16 | ||
| Concentric neutral Approx, diameter of wires, mm | 1.5 | 1.5 | 1.5 | 1.5 | ||
| Minimum lay lengths, mm | 146.5 | 155 | 165 | 178 | ||
| Thickness of over sheath, mm | 1.4 | 1.4 | 1.5 | 1.6 | ||
| Minimum thickness of over sheath at any point | 1.09 | 1.09 | 1.17 | 1.2 | ||
| Maximum conductor DC resistance per 1000m of cable at 20°C | Phase, Ω | 3.08 | 1.15 | 1.2 | 0.868 | |
| Neutral-earth, Ω | 4.61 | 3.08 | 1.91 | 1.2 | ||
| Maximum weight of the complete conductor excluding insulation | * | 43.9 | 69.5 | 96.4 | ||
| Power frequency withstand voltage, for 5mins, kVrms | 3.5 | |||||
| Insulation resistance at 500Vdc in 1min at 20qC., MQ/Km | 8 | 8 | 6 | 5 | ||
| * Manufacturer to state the design value based on the sizes of conductors specified | ||||||
Type II: PVC Insulated Single phase concentric aluminum cable without copper communication pair
| Phase Conductor | Concentric neutral conductor: number. & approx, diameter of wires | Minimum lay lengths | Thickness of over sheath | Approxmate overall diameter | Maximum conductor DC resistance per 1000m of cable at 20°C | |||
| Nominal area | No.&approx.dia.of wires mm | Thickness of insulation mm | No,/mm | mm | mm | mm | Phase ohms | Neutral ohms |
| 10 | 7/1.35 | 1.55 | 23/1.13 | 146.5 | 1.4 | 12.21 | 3.08 | 1.335 |
| 16 | 7/1.70 | 1.55 | 26/1.13 | 155 | 1.4 | 13.34 | 1.91 | 1.808 |
| 25 | 7/2.14 | 1.6 | 29/1.13 | 165 | 1.5 | 14.88 | 1.2 | 1.0586 |
| 35 | 19/1.53 | 1.65 | 27/1.35 | 178 | 1.6 | 16.75 | 0.868 | 0.7966 |
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