HOLT Electricians Complete Practice Exam 2025

Question: 1 / 400

What is the minimum internal depth required for outlet boxes intended to enclose flush devices?

¼ inch

½ inch

The minimum internal depth required for outlet boxes that are designed to enclose flush devices is ½ inch. This depth is specified to ensure that there is adequate space for the conductors, connections, and the flush device itself, usually a switch or outlet. A box that is at least ½ inch deep can accommodate the necessary wiring and ensure proper installation without overcrowding, which could lead to potential hazards like overheating or electrical failure. Maintaining this minimum depth is crucial for the safety and functionality of any electrical installation, as it helps to prevent damage to the wires and ensures compliance with the National Electrical Code (NEC) standards.

The other options would not meet the safety and practical requirements set forth by the Electrical Code for proper installation of flush devices, potentially compromising the installation integrity.

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¾ inch

1 inch

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