Which item is installed to prevent cables from nails or screws in finished walls?

Which item is installed to prevent cables from nails or screws in finished walls?

• A. Mud ring
• B. Grommet
• C. Steel plate
• D. Wall plate

Answer: (C)

Protecting cables from being hit by nails or screws in finished walls is done with a steel plate, often called a nail plate. When cables run through studs near the wall surface, drywall nails or screws can penetrate them during finishing or mounting items. A steel plate is placed over the stud where the cable passes, creating a rigid shield that nails can’t easily penetrate, so the wire inside stays safe. This simple barrier is specifically designed for this purpose and is widely used in both framing and finished-wall installations. Mud rings are used to trim and align an electrical box with drywall, not to shield wires. A grommet protects a cable where it passes through a hole to prevent abrasion, but it isn’t the primary solution for nails or screws hitting cables inside a wall. A wall plate covers the electrical device or outlet, not the cabling protection itself.

Protecting cables from being hit by nails or screws in finished walls is done with a steel plate, often called a nail plate. When cables run through studs near the wall surface, drywall nails or screws can penetrate them during finishing or mounting items. A steel plate is placed over the stud where the cable passes, creating a rigid shield that nails can’t easily penetrate, so the wire inside stays safe. This simple barrier is specifically designed for this purpose and is widely used in both framing and finished-wall installations.

Mud rings are used to trim and align an electrical box with drywall, not to shield wires. A grommet protects a cable where it passes through a hole to prevent abrasion, but it isn’t the primary solution for nails or screws hitting cables inside a wall. A wall plate covers the electrical device or outlet, not the cabling protection itself.