How To Wire A Bathroom Ceiling Fan. Wiring Ceiling Fan and Light Operated With One Switch Connect the greenbare copper wires together. If your old fan wasnt attached to a joist and theres a space between the joist and the ceiling hole attach lumber to the joist and build it out next to the hole so the fan can be screwed to solid wood.

Wiring for Switches New electrical code s do require a neutral wire in the switch box therefore extending the neutral wire. Connect the lighting wire typically blue to the black fan wire and the black ceiling wire. Wiring for Fan Light.
Connect the white wires from your exhaust fan to the common white wire in your electrical system.
Use a wire nut and not just electrical tape. See below for a shopping. In this video This Old House host Kevin OConnor works with a professional electrician to install a ventilation fan in a bathroom. Connect black wires together.
