Which NEC table is used for determining the minimum sizes for wire-type equipment grounding conductors?

The minimum sizes for wire-type equipment grounding conductors are specified in Table 250.122 of the National Electrical Code (NEC). This table provides essential information for selecting the appropriate size of grounding conductors based on the ratings of the overcurrent protection device protecting the circuit. Adequate sizing is critical to ensure proper grounding and bonding, which play a vital role in enhancing safety by minimizing the risk of electric shock and equipment damage.

By referring specifically to Table 250.122, electricians and engineers can ensure compliance with NEC requirements, thereby facilitating safe electrical installations. This table addresses grounding conductors used for various types of equipment, many of which are commonly encountered in residential, commercial, and industrial applications, ensuring that they are effectively protected against faults.