* Some boxes come with built-in connectors.
* Armored cable connectors have inner rims to hold fiber bushings at the end of the cable.
* Nonmetallic cable connectors are designed to grip the installation around the cable with a two-screw clamp.
* Regardless of the type of cable used, always leave about 6" to 8" of wiring in the box to allow plenty of wire for making easy connections.
* You can tighten the nut on either type of cable connector by placing a screwdriver in the notch and tapping the screwdriver lightly.
MAKE ALL CONNECTIONS IN APPROVED BOXES
* Always remember that connections must be made in an approved box. Never connect one cable to another by an open-line splice.
* All switch, outlet, and junction boxes must be positioned so they are always accessible.
* You can easily remove knockout plugs with a nail punch, screwdriver or metal rod.
RUNNING NEW CABLE BETWEEN MULTIPLE FLOORS
* Drill a hole through the floor from bottom to top. Be sure the hole is drilled into the recessed area behind the wall rather than in the open. Be sure to use a bit that's large enough to permit free passage of the wiring cable.
* Run the cable through the newly drilled hole to the desired location for the new receptacle or switch .
* Bring the cable through the opening by using a weight on the end of a string and a wire with a hook on the end .
* Using this same technique, you can add one outlet to another by drilling up through the floor, pulling the cable under the floor, and then running it to the desired position on the opposite wall . The same wiring can be pulled through for either receptacles or switches.
ADDING NEW WIRING FROM BOXES IN CEILING
* If your home has an unfinished attic, it may be easier to add new wiring by attaching it to boxes in the ceiling. In this way, gravity works for you rather than against you.
* Attach the cable to the box as previously described.
* Cut a hole in the wall at the desired location for the switch or receptacle, and run the cable from the box in the ceiling to the new outlet location.
* Bring the new cable through the wall and ceiling by cutting and drilling holes in and through the wall, the 2x4 plate, and the ceiling. A special fish tape is available for these types of jobs.
ADDING NEW WIRING ON THE SAME WALL
* You can connect new cable from an existing outlet to a new outlet on the same wall by running it inside the wall. Mark the approximate location of the new outlet. Using a stud finder locate and mark the wall studs. Start one stud before the existing outlet and end one stud after the new outlet.
* Mark the exact location of the new box. Make it the same height as the existing box. Do not locate it over a stud. Using a drywall or keyhole saw, cut the opening for the new box.
* Using a utility knife and a drywall saw, cut a strip of drywall about 3" wide out of the wall, below the outlets. Start at the center of the first stud you marked and end at the center of the last stud; watch for nails as you cut. Carefully remove the drywall strip.
* Using a hand or circular saw, make two cuts 1" apart and 3/4" deep in each of the exposed studs. Using a hammer and a chisel, remove the wood between the two saw cuts.
* Be sure the power is off to the existing outlet
Remove the cover plate and the receptacle. Remove one of the knockouts in the bottom of the box. Run the new wire behind the wall and up through the knockout in the box. Tighten the clamp and attach the wires. If the box does not have a clamp, place a wire clamp on the new cable. Tighten the screw to hold the clamp on the wire. Be sure the nut is off the wire clamp and run the wire up to the box as before. Feed the threaded end of the clamp up through the knockout, replace the nut and tighten. Replace the receptacle and the cover plate.
* On the new box, remove one of the knockouts in the bottom of the box. If the box you are using is a self-clamping box, insert the box into the wall and tighten. If not, insert the box into the wall, insert a Madison hanger on each side of the box, and bend the tabs over into the box to tighten.
* Finish running the wire from the existing box through the notches and up behind the wall into the box as before. Clamp the wire and install the receptacle as in Fig. 3. Install the cover plate, turn on the power, and test the circuit with a neon tester. Shut off the power again to safely finish the project.
* Nail metal cable protectors to the exposed studs over the notches. Replace the drywall strip you removed earlier. Use the spackling compound and drywall tape to complete the installation.
* Cable can be pulled from an existing box on one wall to a new outlet on the opposite side of the same wall.
* Attach a cable to the existing receptacle in the box as previously described. Allow ample slack in the cable to permit easy connection to the new box to be installed on the opposite wall.
* Bring the cable through the new opening with a wire.
* Connect the cable to the new box, attach the desired receptacle, and mount the box to the wall with box supports if it is not near a stud.