The size of the ground wire is specified by the _______

The size of the ground wire is specified by the National Electrical Code (NEC), which serves as a standard for electrical installations in the United States. The NEC outlines the minimum requirements for safe electrical wiring and equipment, covering aspects such as sizing of conductors, including ground wires, to ensure safety against electrical faults.

The NEC provides detailed tables and guidelines that specify the appropriate size of the ground wire based on factors like the type of wiring system, the amperage of the circuit, and whether the installation is for residential or commercial use. Ensuring the correct size of the ground wire is crucial for the effectiveness of the grounding system, as it helps in safely dissipating fault currents and protecting both equipment and personnel from electrocution or equipment damage.

In contrast, other codes and organizations like the International Building Code, Occupational Safety and Health Administration, and American National Standards Institute may address building safety, workplace safety, and standardized practices, but they do not specifically dictate the sizing of grounding conductors as the NEC does.