An equipment grounding conductor shall be run with the phase conductors of a single-point grounded neutral system and what else?

The correct answer encompasses the idea that an equipment grounding conductor must be installed alongside the phase conductors and also involves additional grounding methods. Specifically, in a single-point grounded neutral system, the grounding conductor plays a crucial role in ensuring a low-resistance path for fault currents, thus protecting both personnel and equipment.

When considering the inclusion of a dedicated grounding wire, it emphasizes a separate conductor designated for grounding, which can enhance the overall safety and reliability of the grounding system. Additionally, integrating a ground rod connection contributes to the grounding network by providing an earthing point, helping dissipate fault currents into the earth. An isolation transformer may also come into play, particularly in systems where separation of circuits is needed to enhance safety or reduce nuisance tripping.

Having all of these components together ensures a robust grounding system, making it essential for proper operation and safety within electrical installations. This approach aligns with best practices in electrical grounding, ensuring comprehensive protection from electrical faults.