The AAC Cattail Conductor (750 MCM) is a type of All Aluminum Conductor specifically designed for overhead power transmission and distribution lines, particularly where mechanical strength is not the primary requirement. This conductor is ideal for urban infrastructure, coastal environments, and industrial installations such as:
City distribution networks
Coastal and marine applications
Railway and subway systems
Shipyards and offshore facilities
Low and medium voltage lines
Primary and secondary power distribution
Its corrosion-resistant aluminum construction and excellent conductivity make it a cost-effective, reliable choice in environments where durability and low maintenance are critical.
Key Features
Excellent corrosion resistance, suitable for harsh or marine environments
Lightweight design allows for easier installation and reduced load on towers or poles
High conductivity, ideal for efficient power transmission over short distances
Cost-effective solution due to the use of aluminum and simple fittings
Flexible and easy to handle, making it suitable for congested or complex overhead layouts
Applicable Standards
The AAC Cattail Conductor complies with:
ASTM B-230: Aluminum 1350-H19 Wire for Electrical Purposes
ASTM B-231: Concentric-Lay-Stranded Aluminum 1350 Conductors
These standards ensure consistent quality, performance, and dimensional accuracy across all conductor sizes.
Construction
All Aluminum Conductor AAC Construction
| Component | Description |
|---|---|
| Conductor Type | All Aluminum Conductor (AAC) |
| Material | Aluminum 1350-H19, electrolytic grade |
| Stranding | Concentric-lay-stranded construction with one central wire surrounded by helically wound layers |
| Lay Direction | Outer layer with right-hand lay; alternating direction for successive layers |
| Typical Size | 750 MCM (Cattail) |
Each additional layer contains six more strands than the one beneath, which ensures mechanical balance and round cross-section. The construction results in uniform current distribution and minimal skin effect at higher frequencies.
Typical Properties (750 MCM – Cattail)
Nominal Aluminum Area: 380.8 mm²
Stranding: 61 wires (usually 61/3.16 mm)
Overall Diameter: Approx. 26.4 mm
Weight: Approx. 1,042 kg/km
Rated Strength: Varies by spec (contact for details)
DC Resistance at 20°C: Approx. 0.0839 ohm/km
(Note: Values may vary slightly depending on manufacturer tolerances.)
Why Choose AAC Cattail Conductors?
Perfect for short-span, low-tension power lines
Ideal for dense urban or coastal installations
Commonly used where cost and corrosion resistance are more important than tensile strength
Compatible with standard compression or bolted fittings
Proven performance in high-salinity and industrial atmospheres