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Conventional 3-way wiring is not very complex. However there is an alternate wiring configuration that could cause confusion.
are used to connect two or more wires together. There are many types of wire connectors, the most common are twist-on.
A fluorescent tube circuit includes a ballast, wires, lampholders, and the tubes.
How to replace a fluorescent ballast, including 2, 3, and 4 lamp series and parallel ballasts. Includes a how to replace a ballast video.
Fluorescent lampholders hold fluorescent tubes in place on a light fixture. Wires from the ballast plug into push-in connectors in the lampholders that connect to the pins of the lamp.
4-way switch configurations are used to control lights with three or more switches.
3-wire cable travels from the switch box and connects to the fan, lights, neutral, and ground wires.
Switches are used to control power to a load. They can be found on anything that runs on electricity.
With conventional light switch wiring using NM cable, the NM supplies line voltage from the electrical panel to a light switch outlet box.
A receptacle (electrical outlet) is a device that supplies power to an electrical load through a cord and plug.
Diagrams showing how outlets are wired using NM cable (Romex). Diagrams also include a dryer outlet and typical ground connections.
A 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.
Includes electrical definitions, ohm's law, and electrical circuit information including direct and alternating current.
There are certain things that you can do in a home or office to troubleshoot and fix certain electrical problems.
Usually when a 3-way or 4-way switch fails, lights can be toggled on and off on all but one switch.
Fluorescent lamps use a ballast which transforms line voltage to a type of power to start up and operate the lamp(s).
Multiple light switch wiring using NM cable. Includes wiring diagrams.
3-way switches are used to control lights with two switches.
Usually when a 3-way switch fails, lights can be toggled on and off at one switch, but not the other.
How to wire 3-way switches using NM (Romex) cable with wiring diagrams included.
Dimmers are used to control lighting level and can save energy.
UPDATED* Electical Questions has been updated with the latest questions about ballasts, switches, and grounding.
New* Emergency Ballasts are rechargeable battery packs that look like a fluorescent ballast and provide emergency light functions inside of a fluorescent tube fixture.