Triplex Overhead Service Drop Cable is designed for distributing single-phase power from utility lines to residential, commercial, or industrial buildings. This aerial bundled cable consists of two insulated aluminum conductors (phase conductors) and one bare aluminum conductor (neutral messenger) twisted together in a triplex configuration.
Aluminum Conductor Triplex Overhead Service Drop Cable Wire
The neutral messenger supports the weight of the cable and also serves as the grounded conductor, while the phase conductors are insulated with weather-resistant polyethylene or cross-linked polyethylene (XLPE), ensuring durability in outdoor environments.
Key Features
Voltage Rating: 600 Volts
Conductor Material: 1350-H19 or 6201-T81 aluminum
Stranding: Class A concentric stranded
Configuration: Two insulated conductors + one bare neutral messenger
Insulation: Black XLPE or HDPE (UV-resistant)
Temperature Rating:
75°C with HDPE
90°C with XLPE
Sunlight, moisture, and abrasion resistant
Complies with ASTM B-230, B-231, B-232, and ICEA S-76-474
Applications
Triplex Service Drop Cable is commonly used for:
Overhead service from pole to the building weatherhead
Rural and residential electrical service
Temporary or permanent overhead distribution
Light commercial connections
Suitable for use in overhead power distribution systems up to 600V (phase-to-phase) and not intended for underground use.
Typical Construction
| Component | Description |
|---|---|
| Phase Conductors | Two aluminum conductors with XLPE or HDPE insulation |
| Neutral Messenger | Bare aluminum wire, also serves as the support strand |
| Assembly | Twisted triplex configuration for aerial installation |
Available Sizes (Common Configurations)
| Size (AWG) | Phase Conductors | Neutral Messenger | Ampacity (approx.) |
|---|---|---|---|
| 6-6-6 | 6 AWG Insulated | 6 AWG Bare | ~55 Amps |
| 4-4-4 | 4 AWG Insulated | 4 AWG Bare | ~85 Amps |
| 2-2-2 | 2 AWG Insulated | 2 AWG Bare | ~115 Amps |
| 1/0-1/0-1/0 | 1/0 AWG Insulated | 1/0 AWG Bare | ~150 Amps |
| 4/0-4/0-2/0 | 4/0 AWG Insulated | 2/0 AWG Bare | ~230 Amps |
Ampacity depends on installation conditions; always consult NEC or local codes.
Technical Specifications
Rated Voltage: 600V phase-to-phase
Phase Insulation: XLPE (black, UV resistant)
Neutral: Bare aluminum, concentrically stranded
Installation: Aerial (pole-to-building), self-supporting
Standards:
ASTM B-230 (Aluminum 1350-H19 Wire)
ASTM B-231 (Stranded Aluminum Conductors)
ASTM B-232 (Concentric-Lay-Stranded, Bare)
ICEA S-76-474 (Service Drop Cable Standard)
Advantages
Lightweight and cost-effective vs copper
High tensile strength with built-in neutral messenger support
UV and moisture resistant insulation for long-term outdoor use
Quick and easy installation
Available in multiple AWG sizes to meet various load demands
Packaging Options
Supplied on wooden reels or coils
Custom length and export packing available
Private labeling / OEM available upon request
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