Which statement about solid wire is supported by the material?

• A. It is cheaper than stranded wire
• B. It is never used in alarm work
• C. It is heavier and harder to terminate
• D. It cannot carry alarm signals

Answer: (A)

Solid wire is cheaper to manufacture than stranded wire because it is a single conductor with fewer parts and simpler processing. In alarm work, fixed wiring often uses solid conductors in walls or conduit, so the lower cost of solid wire translates into a practical savings over length of runs. Stranded wire costs more because it consists of many strands and requires more processing and materials to bind them together, which is why the material points to cost as the distinguishing feature.

The other statements don’t fit the material’s guidance. Solid wire is not unused in alarm work; it’s commonly used for fixed installations. It can carry alarm signals just like stranded wire, so the notion that it cannot carry signals is incorrect. As for being heavier and harder to terminate, the weight per conductor is essentially the same for the same gauge, and termination of solid wire is generally straightforward in many terminal blocks, so that claim doesn’t align with the typical material.