Electrical Wiring in the Home/Switch/Wiring Problem


Hi, I am renovating a bathroom. i added wiring for a exhaust fan to a new timer switch. i also added a new GFCI plug(used existing wiring). The existing wiring - the hot feed came in to the light switch box, hot pigtailed to switch and then black to black and out of box. this switch operated the gfci and the light power. now once i hooked back up, for some reason when i turn the switch on, i have both the white and black "live" to both the gfci and the light. once i connect the fan feed it also goes hot in both the black and whites. i am thinking i have a short in the wall somewhere..but possibly i am just missing something very simple here. appreciate you time..Derek

OK, the wire from the power source goes into the switch box.  From there it goes to the GFCI and the light and the fan?  If that is the case, all of the whites connect together. The black wire coming in goes to the light switch, the timer, and the black wire of the GFCI.  The black wire going to the fan goes to the other fan switch screw, and the black wire from the light goes to the other light switch screw.

Now, if instead, the power goes to the light first, none of this will work unless you add another wire.

Check to see that the wires are connected as I said. If there is a problem, write me back.
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Electrical Wiring in the Home

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Bob Sponaugle


Just about any home wiring question. (not appliance repair) I have done all kinds of home wiring for myself, including adding a new breaker box, etc. Please, questions from North America only. Please be specific with details.

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