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  • How a 3-Way Wall Switch Works

    Light switches are simple in design. Current flows through a switch to the load, such as a ceiling light. When you flip the switch off, it breaks the circuit and interrupts the flow of electricity. A basic light switch has two terminals and sometimes a ground terminal. The hot wire from the power...
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  • How To Replace an Electrical Outlet

    When an old electrical outlet will no longer work, cannot hold a plug securely, or becomes damaged, it should be replaced. Replacement is usually very easy and should require only 5 to 10 minutes. Always replace an outlet with one of the same type and rating. If you are replacing an outlet near a...
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  • How To Test an Outlet for Voltage

    You can test an outlet to determine if current can flow with a voltage tester. Always test your test equipment for proper operation before use. If you don’t have a voltage tester, simply use a shop light or other convenient electrical device. Start by making sure the tester is working and p...
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  • What is a GFCI Outlet – How does a GFCI work?

    A GFCI (ground fault circuit interrupter) outlet is a device that adds a greater level of safety by reducing the risk of electric shock. Most building codes now require that a GFCI outlet be used in wet locations such as bathrooms, kitchens, laundry rooms and outdoors. A GFCI outlet monitors for...
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