True or False: NEC Table 250.66 is used for sizing conductors and bonding jumpers used to form the grounding electrode system.

The statement is true because NEC Table 250.66 provides the necessary information for determining the appropriate sizes of conductors and bonding jumpers used to connect grounding electrodes. This table outlines the minimum size requirements for various types of grounding conductors based on the size of the largest ungrounded conductor of the service or feeder, thereby ensuring a proper and effective grounding system. This is critical in electrical systems for safety and compliance with the National Electrical Code (NEC) standards. By referencing this table, electricians and other professionals can ensure that the grounding electrode system is adequately sized to handle potential fault currents and minimize the risk of electric shock or fire hazards.