What is the minimum size of tracer wire required for underground plastic pipe?

The minimum size of tracer wire required for underground plastic pipe is AWG 14. Tracer wire is essential for locating underground utilities, such as plastic pipes, since plastic does not conduct electricity and is not detectable by standard locating equipment.

Using AWG 14 tracer wire strikes a balance between being thin enough for easy installation while still being robust enough to withstand environmental damage, such as corrosion or abrasion, over time. This wire size provides adequate conductivity for the signals utilized in tracing, ensuring that the wire can relay information effectively when a detection unit is employed.

The selection of tracer wire size is guided by safety standards and codes, which generally favor AWG 14 as the minimum for underground installations. This helps in maintaining a standard across multiple installations and ensuring effective tracing capability. Higher gauge wires, such as AWG 12 or lower gauge options like AWG 10, may also be used in certain situations, but AWG 14 remains the minimum allowable size recognized for the purpose of facilitating safe and effective utility location.