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Electrical 101 Homepage
Alternate 3-Way Switch Wiring DiagramsConventional 3-way wiring is not very complex. However there is an alternate wiring configuration that could cause confusion.

Ballast WiringA fluorescent tube circuit includes a ballast, wires, lampholders, and the tubes.

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4-Way Switches4-way switch configurations are used to control lights with three or more switches.

Ceiling Fan Switch Wiring3-wire cable travels from the switch box and connects to the fan, lights, neutral, and ground wires.

SwitchesSwitches are used to control power to a load. They can be found on anything that runs on electricity.

Electrical OutletsA receptacle (electrical outlet) is a device that supplies power to an electrical load through a cord and plug.

Outlet WiringDiagrams showing how outlets are wired using NM cable (Romex). Diagrams also include a dryer outlet and typical ground connections.


Split ReceptaclesA duplex receptacle has removable metal tabs that electrically connect line and neutral together on each receptacle. A split receptacle is a duplex with one or both tabs removed to isolate each receptacle from the other.

Basic electricityIncludes electrical definitions, ohm's law, and electrical circuit information including direct and alternating current.

Wire Connectorsare used to connect two or more wires together. There are many types of wire connectors, the most common are twist-on.

Electrical TroubleshootingThere are certain things that you can do in a home or office to troubleshoot and fix certain electrical problems.

Troubleshoot 4-Way SwitchesUsually when a 3-way or 4-way switch fails, lights can be toggled on and off on all but one switch.

Fluorescent BallastsFluorescent lamps use a ballast which transforms line voltage to a type of power to start up and operate the lamp(s).

Multiple Switch WiringMultiple light switch wiring using NM cable. Includes wiring diagrams.

3-Way Switches3-way switches are used to control lights with two switches.

Troubleshoot  3-Way SwitchesUsually when a 3-way switch fails, lights can be toggled on and off at one switch, but not the other.

3-Way Switch WiringHow to wire 3-way switches using NM (Romex) cable with wiring diagrams included.

Dimmer SwitchesDimmers are used to control lighting level and can save energy.

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NEW* Electrical Ground is very important for the safety of electrical systems. New residential dwellings need to be grounded because of changes to the 1962 Electrical Code.

Light Switch WiringWith conventional light switch wiring using NM cable, the NM supplies line voltage from the electrical panel to a light switch outlet box.