Definition: A stranding configuration that uses two strand sizes to achieve a 3% reduction in the conductor diameter without compression
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ASTM B787 / B787M – 04(2014) Standard Specification for 19 Wire Combination Unilay-Stranded Copper Conductors for Subsequent Insulation
Types of Strand Construction | IEWC Technical Guide
IIS 8.5 Detailed Error – 406.0 – Not Acceptable