The following basic light switch wiring how-to outlines the steps to wiring a light switch, both for single-pole switches and 3-way switches. Tools & Materials Bobvila.com may earn a commission.. This is an updated version of the first arrangement. Because the electrical code as of the 2011 NEC update requires a neutral wire in most new switch boxes, a 3-wire cable runs between the light and SW1. The red and black are used for hot and the white neutral wire at the box allows for powering a timer, remote control, or other programmable device.
Light Switch Wire Connections; Replace a light switch video | How To Wire Single Light Switches - When wiring a single pole light switch that only has two screw terminals or two plug-in connections on the back and the terminal for the ground wire. Top of List DIY Home Electrical Wiring Projects. Wiring a light switch is one of the most common wiring jobs for any home, basement, or garage. Basic Light Switch Diagram - (pdf, 42kb) Back to Wiring Diagrams Home. 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.