What is the minimum gauge for tracer wire according to IPC standards?

The minimum gauge for tracer wire according to IPC (International Plumbing Code) standards is 18 gauge. This specification is important because tracer wire is utilized for locating buried utility lines, ensuring those installations can be identified easily and accurately. Using a wire that is too thin may not provide the necessary durability and signal strength for reliable detection, while a thicker gauge may not be practical or required for all installations. In this context, 18 gauge strikes a balance between sufficient strength for underground use and compatibility with typical locator equipment, ensuring compliance with safety and installation standards.