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Setting ground clearance in new construction to exceed the NEC (National Electrical Code) requirements is crucial for ensuring safety and compliance. NEC standards are designed to provide a minimum level of safety for electrical installations, accounting for various environmental factors and potential hazards. By exceeding these requirements, you not only align with the best practices of electrical safety but also mitigate risks associated with flooding, debris contamination, and potential physical damage to electrical components.

Exceeding the NEC standards can provide additional protection that accounts for unforeseen circumstances such as changes in environmental conditions or land grading that could affect the performance of the electrical systems over time. Moreover, it demonstrates a proactive approach in construction practices, where attention to additional safeguards is taken to ensure the reliability and integrity of the electrical installation.

In summary, incorporating a clearance that is greater than the NEC requirements enhances safety measures and helps future-proof the installation against various challenges that could arise, which is why this option is deemed correct.