What is the minimum gauge size of tracer wire required for nonmetallic pipe used for underground gas?

The minimum gauge size of tracer wire required for nonmetallic pipe used for underground gas is crucial for ensuring proper detection and assistance in locating the pipe. AWG 14 is specified as it provides a good balance between conductivity and flexibility. This gauge is robust enough to withstand environmental factors such as soil conditions and potential physical stress during installation and operation.

Using a wire that is too thin, such as AWG 16, may cause difficulties in locating the pipe properly, especially over time as corrosion or wear can affect its ability to transmit signals effectively. Conversely, while gauges like AWG 10 and AWG 12 are stronger, they may not be necessary for typical applications involving nonmetallic piping and could be more difficult to work with due to their stiffness. Therefore, AWG 14 is recognized as the standard gauge that meets both the requirements for detection and practical installation considerations.