Which of the following tables is used to select a supply-side equipment bonding jumper?

Which of the following tables is used to select a supply-side equipment bonding jumper?

• A. Table 250.66
• B. Table 250.122
• C. Table 310.16
• D. Table 250.102(C)(1)

Answer: (D)

The correct choice is based on the specific requirements laid out in the National Electrical Code (NEC) concerning bonding and grounding. Table 250.102(C)(1) is designed to provide the necessary guidelines for determining the size of supply-side equipment bonding jumpers. This table takes into account the rating of the service-entrance conductors and the types of systems being used, ensuring that the bonding jumper is appropriately sized to safely conduct potential fault currents back to the source, which is critical for effective grounding and bonding practices. This helps to enhance the safety and reliability of electrical systems by minimizing the risk of electrical shock, equipment damage, or fire. In contrast, the other tables mentioned serve different purposes: Table 250.66 deals with grounding electrode conductors, while Table 250.122 pertains to equipment grounding conductors. Table 310.16 is specifically related to conductor ampacity, which does not pertain to bonding jumpers. Therefore, selecting Table 250.102(C)(1) is essential for correctly addressing bonding jumper sizing according to established code requirements.

The correct choice is based on the specific requirements laid out in the National Electrical Code (NEC) concerning bonding and grounding. Table 250.102(C)(1) is designed to provide the necessary guidelines for determining the size of supply-side equipment bonding jumpers.

This table takes into account the rating of the service-entrance conductors and the types of systems being used, ensuring that the bonding jumper is appropriately sized to safely conduct potential fault currents back to the source, which is critical for effective grounding and bonding practices. This helps to enhance the safety and reliability of electrical systems by minimizing the risk of electrical shock, equipment damage, or fire.

In contrast, the other tables mentioned serve different purposes: Table 250.66 deals with grounding electrode conductors, while Table 250.122 pertains to equipment grounding conductors. Table 310.16 is specifically related to conductor ampacity, which does not pertain to bonding jumpers. Therefore, selecting Table 250.102(C)(1) is essential for correctly addressing bonding jumper sizing according to established code requirements.