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Ohm’s Law Voltage, current, resistance, and power can be calculated using ohm’s law.

Ohms Law PEIR Symbol Thumb

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

Digital Multimeter Thumb

Wire connectors are used to connect two or more wires together. There are many types of wire connectors, the most common are twist-on. IDEAL Industries brand twist-on wire connectors are the most commonly used and will be featured in this article.

Common Wire Connectors

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

Circuit Breakers

Ceiling Fan Switch Wiring There are several ways to control  ceiling fans and lights.

Receptacle Pulled Out of Box

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

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

2  Lamp Parallel Ballast Wiring Diagram

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

Fluorescent Ballast Blue Wire Nut

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

Toggling 3-way Switch Wiring Diagram

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

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

Toggling 4-Way Light Switch Light switch and dimmer

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

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.

Ceiling Fan One Wire Switch Diagram 3-way Switch Down Position 4-way Switch Down Position GFCI Receptacle