Figure 5-31. - Grounding methods: (A) More than one receptacle in line and (B) a single receptacle in a circuit.
shown in figure 5-31, view A. Figure 5-31, view B, shows an example of how you can ground a single receptacle in a circuit using a grounding clip. Grounding the receptacle in this way bonds the box, grounding wire, and receptacle, and precludes use of an additional jumper wire.
Now that we have made the ground connections, the next step of the finish work is to make terminal connections. Properly made terminal connections are important for several reasons. The operation of the circuit, prevention of tire, and safety of personnel all depend on good electrical connections. Electrical connections must be electrically and mechanically secure. There are two ways to make connections to devices: with or without using a terminal loop. The method of using the terminal loop and screw is shown in figure 5-32. Some receptacles and switches are made so
Figure 5-32. - Wire terminal loop.
that they can be wired from the back without using a terminal loop. This method is shown in figure 5-33. Now that you have made your terminal connections, you install the device into its box and secure it with the screws provided. The next step is to install the receptacle cover plates. Cover plates will be installed plumb, will completely cover the opening, and will be seated against the mounting surface.
When installing switches for interior wiring, you use single-pole, three-way, or four-way toggle switches. Most of the switches you use will be single-pole, but occasionally you will have to install a three-way system, and on rare occasions, a four-way system. Still another system of switching, called the low-voltage system, is coming into use.
Figure 5-33. - Back-wired receptacle.Continue Reading