Which size of cable typically has 9 strands?

The correct choice is based on common constructions of cables used in overhead line applications. In particular, 4/0 AAAC (All Aluminum Alloy Conductor) cables are typically manufactured with 9 strands. This design allows for a balance between strength, flexibility, and electrical conductivity, which is essential in high-capacity applications involving overhead power lines.

The other listed cable sizes do not have the same standard strand count. For instance, 1/0 AAAC and 1/0 TPX (a type of copper cable) generally feature fewer strands, reflecting their smaller overall size and less capacity compared to 4/0 AAAC. Similarly, 2/0 Cu does not match the strand configuration common to 4/0 AAAC, since configurations can vary considerably based on the specific design and intended application of the conductor. Hence, understanding the standard designs for these conductor sizes aids in correctly identifying the one with 9 strands.