In plumbing systems, which material is commonly used for tracer wire?

The commonly used material for tracer wire in plumbing systems is copper. Tracer wire is utilized primarily for identifying and locating underground utility lines, including water pipes. Copper is favored due to its excellent conductivity and resistance to corrosion. This ensures that the wire remains effective over time, even when buried in the ground or exposed to moisture.

Copper's durability means it can withstand harsh environmental conditions, which is crucial for maintaining signal quality for locating the utility lines. When a current is applied, the wire emits a signal that can be detected above ground, allowing for accurate location of underground plumbing systems without the need for excavation. Other materials might have specific properties that limit their effectiveness in this application, such as susceptibility to corrosion or lack of conductivity, making copper the superior choice for tracer wire in plumbing.