What type of depth is needed for outlet boxes to avoid damage to conductors?

The correct answer is focused on the need for outlet boxes to be designed and constructed to ensure safety and functionality when housing electrical conductors. Specifically, using an approved depth for outlet boxes is essential to avoid potential damage to conductors. This is because approved outlet boxes are manufactured to meet safety standards that help prevent overheating, short circuits, and other electrical hazards.

Using the appropriate depth allows sufficient space for the wires to be properly bent and secured without being pinched or overstrained. If outlet boxes are too shallow or deep, they can compromise the integrity of the electrical connections, leading to issues such as wire insulation damage or strained conductors, which can pose risks of electrical fires or shocks. Therefore, selecting outlet boxes that adhere to approved depth standards is crucial in maintaining safe electrical installations.