These wiring options are suitable for paddle fans and light combos as well as exhaust fan and light combo units. For situations where an exhaust fan or exhaust fan and light combo is used above a bathtub or shower, the fixture must be specifically approved for that purpose and must be GFI protected. Bathrooms with windows that open are not required to have bathroom exhaust fans as per the CABI One and Two Family Dwelling Codes. For purposes of relating to the wiring scenarios listed bellow, the source of the power cable indicated in the diagrams must be GFI protected at or before that point. Note: Be sure to read about common wiring methods used concerning wiring a dwelling, where you will find a description of a fan box approved for use with paddle fans.