After the installation of permanently fixed swimming pools, the authority having jurisdiction may require _____ inspection and testing.

The requirement for periodic inspection and testing after the installation of permanently fixed swimming pools aligns with safety and compliance protocols outlined in the National Electrical Code (NEC) Article 680. Periodic inspections are crucial because they ensure that the electrical installations remain safe and operational over time, considering that installations could experience wear and tear or changes in local codes.

This approach addresses various potential hazards related to water and electricity. Regular inspections help maintain compliance with safety standards, preventing electrical shock risks and ensuring that the pool's wiring, lighting, and other electrical components function correctly. As situations and regulations may evolve, establishing a schedule for periodic inspections reinforces ongoing safety and compliance rather than relying on one-off checks that may not account for future conditions or changes in the environment.

Other options, such as annual, immediate, or preliminary inspections, do not comprehensively capture the ongoing nature of safety requirements for swimming pools. While annual inspections could be beneficial, they are not specified as the standard expectation in this context, and immediate inspections are generally not practical after completion unless specific issues arise. Preliminary inspections typically take place before the installation is finalized, addressing different stages of the installation process. Hence, periodic inspections are the most fitting choice for ensuring long-term safety and reliability.