Electrician's Licensing Practice Exam

What installations does NEC Section 680-20 pertain to?

1. Electrical installations in industrial factories

2. Electrical installations at residential properties

3. Electrical installations at permanently installed pools

4. Electrical installations in commercial buildings

The correct answer is: Electrical installations at permanently installed pools

NEC Section 680-20 specifically pertains to electrical installations at permanently installed pools. This section of the National Electrical Code outlines the requirements and safety standards necessary to ensure safe electrical design and implementation in and around swimming pools, spas, and other water features that are permanently constructed. The focus on these installations is crucial due to the unique hazards associated with electricity and water, necessitating stringent guidelines to protect individuals from electrical shock and other dangers. The other options address broader categories of electrical installations but do not specifically focus on the types of safety considerations and electrical requirements set forth in NEC Section 680-20. For example, while industrial factories and commercial buildings have their own specific codes and regulations for electrical work, they are not governed by the provisions laid out in sections concerning pools and water features. Similarly, residential properties may have different regulations that do not directly correlate with those specified for pool installations. Therefore, the choice that reflects the focus of NEC Section 680-20 is indeed those installations at permanently installed pools.