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4-way Switch Down Position GFCI Receptacle 3-way Switch Down Position Blue Wire Nut

Replace Ballasts Light fixtures from the factory are wired with the ballast wires connected directly to the lampholders.

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

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

Ground Fault Circuit Interrupters (GFCIs) A GFCI is a receptacle or circuit breaker that is used to increase safety in areas that are prone to the risk of electric shock.

Ohms Law Voltage, current, resistance, and power can be calculated using ohm’s law. At a given voltage when resistance increases, current decreases.

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

Circuit Breakers

Circuit Breakers protect a circuit from overloads and short circuits. When the current exceeds the rating of the breaker, it will trip.

Receptacle Pulled Out of Box

No Power to Outlets Flickering lights and a loss of power are usually attributed to a loose wire connection.

2 Lamp Parallel Ballast Wiring Diagram

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

Fluorescent Ballast

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

Toggling 4-way Switch Wiring Diagram

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

Light switch and dimmer

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

Toggling 3-way Switch Wiring Diagram

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

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

Ceiling fan switch wire makeup

Ceiling Fan Switch Wiring 3-wire cable travels from the switch box and connects to the fan, lights, neutral, and ground wires.

Wire Connectors

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How to Replace a Ceiling Light Fixture

Ceiling Fixture