Wiring Methods & MaterialsQuestion 75 of 120
A cable passes through a bored hole in a wood stud. If the edge of the hole is less than 1 and 1/4 inches from the nearest edge of the stud, what is required?
a.The cable must be rerouted through a notch instead
b.A steel plate or bushing at least 1/16 inch thick installed to protect the cable
c.A listed nonmetallic sleeve of any thickness
d.Nothing additional, provided the cable is Type MC
Explanation
When the required 1 and 1/4-inch setback cannot be maintained, a steel plate, sleeve or bushing at least 1/16 inch thick must cover the area of the wire so a drywall screw or nail cannot reach it. Notching is more damaging to the stud and creates the same exposure, and nonmetallic sleeves do not satisfy this rule.
Law Reference: 2023 NEC §300.4(A)(1)Practice all 120 questions free — no signup required.
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