ICEA S-76-474

Standard Overview  

ICEA S-76-474 is an industry standard published by the Insulated Cable Engineers Association (ICEA) for Neutral-Supported Power Cables. It specifies requirements for bundled overhead conductors with an integrated neutral messenger wire, primarily used in secondary electrical distribution systems up to 1,000 V.

 Key Technical Requirements  

• Conductor Configuration
  • Integrated Design: Combines insulated phase conductors (aluminum) spiralled around a bare/covered steel neutral messenger wire
  • Voltage Rating: Rated for 600 V or 1,000 V systems
• Material Specifications
  • Phase Conductors: XLPE or PE insulation with thicknesses of 0.76–1.52 mm
  • Messenger Wire: Galvanized steel strand compliant with ASTM A475 tensile strength (≥1,380 MPa)
• Environmental Resilience
  • UV-resistant insulation, operational from –40°C to +90°C
  • Waterblocking features for wet conditions

Application  

These cables are deployed in overhead power distribution networks requiring compact installations:  

• Secondary Distribution Lines: Service drops to residential/commercial buildings.  
• Rural Electrification: Cost-effective solutions for low-density areas.  
• Storm-Prone Regions: Enhanced durability against wind/ice loads due to integrated support.

Related Standards  

•  ANSI/ICEA S70547: Weather-resistant covered conductors for primary distribution
•  ANSI/ICEA S121733: Standards for spacercable systems
•  ASTM B232: Aluminum conductors referenced for phase wires