What is the minimum thickness and width for bonding jumper(s) from grounding electrodes?

What is the minimum thickness and width for bonding jumper(s) from grounding electrodes?

• A. 1/8 inch thick × 2 inch wide
• B. 1/4 inch thick × 2 inch wide
• C. 1/4 inch thick × 3 inch wide
• D. 1/2 inch thick × 2 inch wide

Answer: (B)

The minimum thickness of the bonding jumper from grounding electrodes is specified as 1/4 inch. This thickness is essential for ensuring that the bonding jumper is robust enough to handle potential fault currents without deforming or failing. A thicker jumper provides greater mechanical strength and conductivity, which is vital for grounding systems in electrical installations. The width of 2 inches for the bonding jumper is also important as it ensures a sufficient contact area for connections, which minimizes resistance and enhances the efficiency of the grounding system. Wider jumpers can also help distribute mechanical loads better and reduce the risk of overheating. This configuration aligns with established standards for grounding and bonding practices to ensure safety, reliability, and electrical integrity in installations. Other options may not meet the minimum requirements set forth in relevant codes and guidelines, which is why they are not correct.

The minimum thickness of the bonding jumper from grounding electrodes is specified as 1/4 inch. This thickness is essential for ensuring that the bonding jumper is robust enough to handle potential fault currents without deforming or failing. A thicker jumper provides greater mechanical strength and conductivity, which is vital for grounding systems in electrical installations.

The width of 2 inches for the bonding jumper is also important as it ensures a sufficient contact area for connections, which minimizes resistance and enhances the efficiency of the grounding system. Wider jumpers can also help distribute mechanical loads better and reduce the risk of overheating.

This configuration aligns with established standards for grounding and bonding practices to ensure safety, reliability, and electrical integrity in installations. Other options may not meet the minimum requirements set forth in relevant codes and guidelines, which is why they are not correct.