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.
A short piece of wire spliced to circuit wires and capped with a wire nut. Used for making connections to a terminal screw on a device such as a receptacle or to a grounding terminal inside an electrical box.
Hold the wires together so the ends match up and twist them together in a clockwise direction using lineman pliers. Make 1 or 2 turns to form a solid union being careful not to dig into the copper with the plier jaws.
A safety wire included in a household electrical circuit to carry current directly to ground in case of a short. The grounding wire in household electrical cable is usually bare copper, but it may also be found covered with green plastic insulation.