Build my own cabin - DIY projects

Bathroom Fan Wiring (Fan Timer Switch)

This exhaust fan or bathroom fan wiring configuration uses a fan timer switch. This is an excellent way to make sure the fan automatically kicks off after 20 or 30 minutes or whatever time you set. This saves valuable energy in your home and also allows you to leave the fan going when you leave the bathroom without having to worry about coming back to turn it off.  Fan timer switches come in many varieties.  Manual dial timer switches have been around for years but you can also find newer timer switches with several buttons to set the time you wish the fan to run.  In either case, the wiring is pretty much the same.  The electronically controlled timers will also have a neutral line connection which is just tied into the white neutral wire nut with the two other white wires in the switch box.


Exhaust Fan Wiring (Fan Timer Switch) - (pdf, 437kb)


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 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