What type of wire is required as a bonding jumper for corrugated stainless steel tubing gas piping?

• A. 4 AWG copper wire
• B. 6 AWG copper wire
• C. 8 AWG copper wire
• D. 10 AWG copper wire

Answer: (B)

The requirement for using a specific size of wire as a bonding jumper for corrugated stainless steel tubing gas piping is to ensure proper electrical continuity and safety. The 6 AWG copper wire is recognized as sufficient for providing adequate protection and grounding for the system.

This size is specifically mandated to handle potential fault currents and protect against electrical hazards that could arise in gas piping systems, which are used in residential and commercial applications. Using a 6 AWG copper wire ensures that any stray currents can be safely dissipated, which helps prevent potential combustion or explosion risks associated with gas leaks.

In contrast, choosing a wire that is too small, such as an 8 AWG or a 10 AWG, might not provide the necessary capacity to handle fault currents safely. Similarly, although a 4 AWG wire could provide sufficient grounding, it is typically over-specified for this application, potentially leading to unnecessary costs and labor. The 6 AWG copper wire strikes a balance between effectiveness, practicality, and compliance with safety standards for bonding gas piping systems.