Protection against nails or screws for cables in wood notches requires a steel plate at least _______ in. thick.

The correct thickness for a steel plate used to protect cables in wood notches from nails or screws is one-sixteenth of an inch. This specification is outlined in electrical codes to ensure that wiring is adequately protected from mechanical damage due to fasteners that may be driven into wooden structures during construction or renovation.

Using a steel plate of this thickness provides a sufficient barrier to prevent nails or screws from penetrating and damaging the insulation or conductors within the cables, which could lead to electrical faults or hazards. The one-sixteenth inch specification strikes a balance between providing adequate defense against external mechanical impacts while not adding excessive bulk or cost to the installation.

It’s important to adhere to these specific thickness requirements to ensure compliance with safety standards and codes, protecting both the electrical system and the integrity of the building.