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Drill Holes in Studs for Wiring

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Electrical roughed in

What happens here

After all electrical boxes are mounted, mark the desired height for the cable runs on each stud and find the center of the stud. Using a drill equipped with a 7/8 inch spade bit, carefully drill holes through the marked centers of the studs. It's critical to maintain a minimum of 1.25 inches (1 1/4 inches) of wood on both sides of the drilled hole to avoid weakening the stud or requiring a metal wire protector. The video demonstrates the potential consequence of drilling off-center by showing a drill bit penetrating a wire, emphasizing the need for metal wire protectors if this clearance is not maintained. These metal wire protectors are simply hammered into place over the cable run if the 1.25-inch margin is compromised.

Goal: Create appropriately sized and located holes in wall studs for running electrical wires.

Tools and materials

  • 7/8 inch Spade Bit — Creating holes for the electrical wire to pass through
  • Drill — Drilling holes through the studs
  • Hammer — Pounding in metal wire protectors if needed
  • Marker — Marking drilling locations on the studs
  • Metal Wire Protector — Protecting electrical wires from nails or screws if drilled holes are too close to the stud edge
  • Safety Glasses — Protecting eyes during drilling
  • Tape Measure — Measuring and marking distances for hole placement

What they say

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After you went around and installed all your boxes, next you're going to drill your holes. Mark the height on all the studs and then find center. Grab a 7/8 spade bit and drill your hole. Make sure that you maintain an inch and a quarter distance from both sides. Inch and a quarter, an inch and a quarter. If you drill too far over on one side, you have to put a metal wire protector on a stud. These get pounded in. Here's what could happen if you don't drill the hole in the middle of your stud.

Auto-generated from the video audio.