A plug-in device that will detect the wiring configuration of an electrical outlet. Through a system of lights this tester will confirm a receptacle is properly wired as well as indicate a problem with the wiring and what the problem is. This is important for polarized, grounded receptacles that can be improperly wired and still power a lamp or other simple test device.
Place the hooks so they point in a clockwise direction and the insulation runs all the way up to the screw. Don’t leave any bare wire between the terminal and the insulation. Tighten the screws to clamp the wires down. Same goes for clamps that are tighten over a straight wire, there should be no bare copper showing.
A wall outlet box that houses two devices side by side as with two wall switches at a door. Triple-gang boxes are also commonly available to hold three devices in one place.
Mark each stud for notching using one of the nail guards as a template. Use a handsaw to cut the top and bottom lines for the notch to the depth of the plate thickness.
Split the sheathing on the cable leaving about 1/4in still covering the wires. Cut the sheathing to remove it and strip off about 3/4 inch of the plastic insulation from the end of each wire. Avoid nicking or scratching the copper wire while removing the insulation.
If permitted, new electrical wiring may be run behind baseboards to serve a new wall receptacle, or to a switch and new ceiling light fixture. To pass the cable through the wall studs a notch is cut in the wood and a metal shield, sometimes called a nail guard, is fastened over the notch to protect the new wires from nail and screw punctures.
Cut drywall patches to fit the space on each side of the new outlet box and attach them to the 2x4 support with drywall screws. Tape the seams with mess tape and cover the whole thing with joint compound and smooth it out. Apply several coats to build up a smooth finish that can be sanded and painted to touch up.
Hold a piece of plywood against the wallboard at each stud and press the crowbar against it to pry the molding off. If you have two-piece baseboards, remove one piece at a time starting with the base cap and then remove the wider parts.