Which bonding method must be applied for circuits over 250 volts phase to ground in certain knockout scenarios?

The correct answer pertains to the bonding methods outlined in Section 250.92 of the National Electrical Code (NEC), specifically regarding the requirements for circuits over 250 volts phase to ground. This section addresses the bonding of grounding conductors to ensure safety and reduce the risk of electrical shock or fire hazards.

When dealing with circuits exceeding 250 volts phase to ground, it's crucial to follow the specific bonding methods listed in Section 250.92(B)(2) through (4). This section details the requirements for bonding systems that can handle the higher voltages and ensure effective grounding. These provisions typically involve establishing reliable paths for fault current which involves properly bonding ancillary equipment, such as raceways, to maintain the integrity of the grounding system.

The inclusion of multiple subsections indicates that various methods may be applicable depending on the installation and specific components involved. Therefore, the reference to all these subsections collectively provides comprehensive coverage of the bonding requirements needed for safety with circuits above 250 volts phase to ground in specific knockout scenarios.

In contrast, the other sections referenced may not encompass the full spectrum of bonding requirements necessary for higher voltages or might focus on bonded systems under different conditions that do not specifically apply to circuits exceeding that voltage threshold. Thus, the selected