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Cable Installation Guide
Install the Cable Step 2:
Make the Schoolroom Connections

Cutting into Drywall

First, find out whether there are obstructions behind the spot you have in mind. Bore a small hole, then bend a piece of stiff wire and insert it in the hole. Rotate the wire in a circle. If the wire hits anything, probe a few inches away.

Trace an outline for the opening with the template supplied with the box or bracket or trace around the box or bracket itself. Use a level to be sure the opening is straight. Jab a utility knife through the drywall and then use a keyhole or drywall saw to saw around the outline. Test-fit the box or bracket, but don't secure a box until you've brought the cable to the opening.

Also see:
Safety in Walls, Ceilings and Attics

Glossary of Terms