What is commonly used to secure equipment grounding conductors to metallic outlet boxes?

• A. Electrical tape
• B. Wire nut
• C. Grounding clip
• D. Heat shrink

Answer: (C)

The commonly used method for securing equipment grounding conductors to metallic outlet boxes is through the use of a grounding clip. Grounding clips provide a reliable mechanical connection that ensures the grounding conductor is properly attached to the metallic box, which is essential for maintaining an effective grounding path and ensuring safety in electrical installations.

A grounding clip usually features a design that allows it to clamp the grounding wire securely to the box, thereby preventing any disconnection due to movement or vibration. This is crucial in preventing potential shock hazards that could arise if the grounding connection were to fail.

In contrast, options such as electrical tape, wire nuts, and heat shrink are not suitable for this purpose. Electrical tape lacks the mechanical stability and strength needed for a long-term secure connection in this application, while wire nuts are primarily designed for splicing wires together, not for securing them to metal structures. Heat shrink may provide insulation but does not serve the purpose of mechanically attaching the grounding conductor to a metallic outlet box. Thus, a grounding clip is the most effective and appropriate choice for this task.