Where should round boxes not be used?

Round boxes are typically designed for specific installation scenarios, and their usage can impact functionality and code compliance. They are generally not ideal where conduits or connectors are fastened to the side of the box because this can impede the box's efficiency in terms of wire management and may also compromise the integrity of the box connections.

When connectors are attached to the side of a round box, you may encounter challenges in accessing the wiring or making proper turns to connect multiple wires, which could lead to overcrowding or a poorly organized space. Additionally, most conduit connections and associated fittings are designed to fit better with rectangular or square junction boxes, which provide more room for internal wiring configurations.

In contrast, round boxes are more effective when affixed to the top or bottom of the box, as this positioning allows for smoother wire transitions and helps wires flow more naturally without excessive bending. By using round boxes appropriately, it enhances installation efficiency and complies with electrical code standards, as inefficient installations could lead to issues such as overheating or short circuits.