Drilling through existing wall studs with no drywall work


Old 07-16-16, 07:47 AM
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Drilling through existing wall studs with no drywall work

I have a outlet that is under a window I want to add one apx 32" over to the side.

There are (2) 12/2 Romex in that box so there is a good chance that one of the wires are going-coming from that direction.

What is the minimum size hole to fit a 12/2 Romex through safely?

I see the 48" flex bits but they are expensive. I see harbor freight has one that is only 3/8" but doubt that would work as 3/8 is probably too small for $7-8.

I will need to drill through 2 studs. The one where the existing box is should be easy if I can remove the box but then the one 16" over I will need to drill through. Then I would mount the new box over on near the 3rd stud. getting me apx 32" over.

Any tips on what I need-could use to make these holes?
I am hoping to do this without any drywall repair work.

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Old 07-16-16, 07:56 AM
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Wires in wall are most likely to short to be tapped into. Much easier to come from a existing outlet. There are old work boxes that you just cut drywall out to size of box. And there are long drills bits to drill studs in wall. Here is a old work box
Shop old work box at Lowes.com: Search Results
and this is one of the drills
Shop long electrial drill bit at Lowes.com: Search Results
There are others.
Old 07-16-16, 08:29 AM
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By code.... the cabling needs to fastened within 6" of the junction box. That makes the cable pretty well set in place and not usable.

As you are drilling under a window.... you may find double studs both sides on the edge of the window

Do you have a basement below ? Easier to go down underneath and back up.
Old 07-16-16, 01:14 PM
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This is not my favorite method, but is your baseboard high enough to remove it and cut a slot in the wall behind it? The slot needs to be high enough to fit a flex bit or spade bit.

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