For #4 AWG bonding conductor, what is the length range?

• A. 0-13 ft
• B. 14-20 ft
• C. 21-26 ft
• D. 27-33 ft

Answer: (B)

The idea is to maintain a continuous, low-impedance bond between metallic enclosures while fitting the bond path to the typical layout of a site. For a #4 AWG bonding conductor, the recommended length range is 14 to 20 feet. This range provides enough slack to reach the common bonding points across equipment rooms or shelters without creating an unnecessarily long run that would add resistance and complicate routing. It also avoids a path that’s too short to span between components that need bonding in a densely packed space. Shorter than 14 feet can be limiting and may require extra jumpers, while longer than 20 feet adds unnecessary length and can complicate installation and maintenance.