Which stranding type results in the largest outside diameter of a conductor?

• A. Concentric
• B. Stranded
• C. Solid
• D. Combination

Answer: (A)

The correct answer is the concentric stranding type, as it is designed to maximize the outside diameter of the conductor. In concentric stranding, multiple layers of wire are arranged around a central core in a circular formation. This geometry allows for a greater overall diameter compared to other stranding types, which may have wires layered in a different configuration.

In contrast, stranded conductors typically consist of smaller wires twisted together but do not create as large an exterior diameter as concentric conductors. Solid conductors, while simple and effective for many applications, have the smallest diameter since they consist of a single, solid piece of metal. Combination types may involve elements of both stranded and solid conductors, but still do not achieve the large outside diameter characteristic of concentric stranding. Thus, when comparing these options, concentric stranding stands out as the one yielding the largest diameter due to its multi-layered arrangement around a central core.