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


Color Temperature is a bulb color rating that is measured on the Kelvin scale (K). The higher the color temperature, the whiter the color.

Color Temperature Chart

Motion Detectors and Occupancy Sensors Motion detectors and occupancy sensors can detect movement and then cause an event to happen.

Occupancy Sensor Switch Receptacle Wiring

How to Replace an Electrical Outlet The most common reason receptacles need to be replaced is because of physical damage.

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

15 amp receptacle Blue Wire Nut

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

Arc Fault Circuit Interrupters (AFCIs) An AFCI is a receptacle or circuit breaker that is used to open a circuit if an abnormal arc is detected.

GFCI Receptacle Test and Reset Button

Basic Electricity An electrical current (the movement of electrons) happens when there is a potential difference (voltage) between the ends of a conductor.

Conductor Atom

Electrical 101 Homepage

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Extension Cord Amps Rating Table

NEW* Extension cords are commonly used for a variety of electrical devices. This page will show how to use the right type of cord, for different devices.

Light Switch Wiring

With conventional light switch wiring using NM cable, the NM supplies 120 volts from the electrical panel to a light switch outlet box.

Light Switch Wiring using NM Cable

Multi-wire Branch Circuit in a residential dwelling contains two 120 V wires of different phases (A and B phase) and share one neutral wire as return current.

Multiwire Branch Circuit Open Thumb 2 Lamp Parallel Ballast Wiring Diagram

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

Garage Door Opener Troubleshooting There are two common reasons a garage door opener won’t close.

Garage Door Opener Receiving Eye Thumb