How to Cut in a Box

Additional switches and outlets are needed in a home from time to time. Knowing how to cut in an electrical box will come in handy if you want to complete this project.

Mark the Hole to be Cut
-Measure up the wall that you want to install the box.
-Place a small line, using a pencil, to mark where the top of the box will be.
-Using the electrical box that you are going to install, hold it up to the wall.
-Put the level on the side of the box to level it.
-Using the pencil, mark the outside of the box on the wall.

Cut the Hole
-Before cutting the hole, place a box or newspaper below the hole to be cut. This will catch all of the drywall dust.
-Using a drywall saw, cut the drywall by following the pencil lines that you’ve just drawn.
-To start the hole, tap the base of the drywall saw until it goes through the drywall.
-Continue cutting until the hole is completely cut out.

Install an Electrical Box
-After cutting the hole in the drywall, insert an electrical box in the hole. If the hole is too tight, you may have to trim it a little.
-Push the box into the hole until the brackets are against the drywall face.

Install Madison Straps
-Insert the Madison straps, one on each side of the box, with the longer part up.
-Slide the strap in past the back of the drywall.
-Slide the strap down until it is centered in the hole.
-Pull it towards you until it is tight against the back of the drywall.

Bend Madison Straps into Place
-Take the Madison straps and bend the tabs inward into the box.
-Be sure to pull them tight and complete the bend using a pair of linesman pliers.
-Bend all four tabs to complete the installation.

Completed Cut-in Box Installation
This is a completed installation of an electrical box that has been cut into a drywall wall. Notice how the box fits securely and that the straps are tightly connected.