ICC Residential Electrical Inspectors Practice Exam

How deep must a body of water be for a pool to be considered permanently installed?

1. 36 inches

2. 42 inches

3. 48 inches

4. 60 inches

The correct answer is: 42 inches

To determine whether a pool is considered permanently installed based on its depth, the criterion is typically set at a specific measurement that signifies a significant amount of water, indicating that the pool is intended for long-term use rather than temporary or inflatable structures. A depth of 42 inches aligns with regulatory standards and common definitions provided by many safety and building codes. This depth ensures that the pool is capable of accommodating various recreational activities, while also implying that it is designed for more than just a simple above-ground or wading pool. Pools of this depth typically require more permanent infrastructure, such as plumbing and electrical installations, which further supports the classification of the pool as permanently installed. In this context, depths less than 42 inches generally correspond to temporary or less permanent types of pools and may not have the same safety and inspection requirements associated with deeper pools. The choice of 42 inches reflects a balance between functionality and regulatory concerns regarding safety and structural integrity for usage as a residential swimming pool.