This is the most common type of wire splice. It's a straight splice between two small solid conductors. You'll need to remove above 5 inches of wire cover on each wire. Cross the exposed wires, first wrapping one side around the other six times, then repeating the process with the othe...
This is an excerpt pertinent to wiring electrical receptacles and switches; other wire sized and applications are given in the source NEC. Typical Electrical Boxes for Single Receptacles, Switches, or Splices Typical electrical junction boxes used for receptacle installation to accommodates a single ...