If you have the walls opened up for remodeling or putting on an addition, these three boxes cover about 99 percent of your needs. The purpose of electrical boxes Wiring connections—where wires ...

They're in tabs on the top and bottom of each switch. The screws also bore into holes on the electrical box behind them. To access the wiring, gently pull the switches out of the electrical boxes.

The wiring may be fine but a lightning strike, a loose connection, moisture, and electrical tinkering can all damage the point at which the wiring connects to the switch or outlet.

I want to add an electrial outlet in my garage on the wall next to the main electrical box. Just what exactly is the procedure to have this done? What are the typical costs involved? Do I just ...