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Switches | Outlets & Plugs | Ballasts | Replace Ballasts | Troubleshooting | Light Bulbs | Basic Electricity | Save Energy | Misc Articles

Ohms Law PEIR Symbol Thumb

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

Receptacle Pulled Out of Box Toggling 3-way Switch Wiring Diagram

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

2 Lamp Parallel Ballast Wiring Diagram Fluorescent Ballast Blue Wire Nut

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

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.

4-way Switch Down Position

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.

GFCI Receptacle Toggling 4-way Switch Wiring Diagram

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

3-way Switch Down Position

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

Electrical 101 Homepage

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

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