What type of boxes should be used in the floor for installations?

In electrical installations, using listed boxes is crucial for compliance with safety standards and regulations. A listed box has been tested and evaluated by a recognized testing laboratory to ensure it meets specific performance and safety requirements. This means it has been designed to handle the electrical loads and environmental conditions it's likely to encounter in a typical installation.

Listed boxes are often made from materials that provide durability and safety, such as metal or high-grade plastic, depending on the application. They are also marked with relevant information that confirms their compliance with industry standards, making it easier for electricians and inspectors to verify their suitability for installation.

In contrast, generic boxes may not have undergone the same rigorous testing, posing potential safety risks during operation. Non-metallic boxes, while they can sometimes be considered for certain installations, must still be listed to ensure they can safely house electrical connections. Custom-made boxes might not align with standardized tests for safety and could lead to issues with inspections or long-term functionality. Therefore, relying on listed boxes ensures that the installation adheres to legal requirements and promotes safety.