Build my own cabin - DIY projects

Wiring a Light Switch

Wiring a single light switch is the simplest of all light switch configurations to wire.  Two-wire Romex is run into the light switch box where the black wires are run through the switch to close or open the electrical circuit to the light bulb.  The white or "neutral" lines are tied together with a wing nut as shown in the diagram.  That's it.  Wiring a light switch is one of the most common wiring jobs for any home, basement, or garage.

Basic Light Switch Diagram       

Basic Light Switch Diagram - (pdf, 42kb)


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Click the icons below to get our NEC® compliant Electrical Calc Elite or Electric Toolkit, available for Android and iOS.  The Electrical Calc Elite is designed to solve many of your common code-based electrical calculations like wire sizes, voltage drop, conduit sizing, etc.  The Electric Toolkit provides some basic electrical calculations, wiring diagrams (similar to those found on this website), and other electrical reference data. 

 electric-toolkit-android     Electrical Calc Elite