From: rcres@XXnewsguy.com   
      
    wrote in message   
   news:3c3643fc-d796-4fec-9232-8844e2fec903@googlegroups.com...   
   I need to add a gfi outlet to my wifes bathroom. I want to add it to the   
   current light switch box. This box currently has two switches, one for the   
   fan,light and one for the vanity light. Each switch has a white wire, a   
   black wire, and a ground. When checking with a voltmeter, the white wire on   
   both switches always has power. Each black wire only has power when the   
   switch is turned on. I am assuming the white wire is the power wire. Can I   
   take these white wires off the switches, connect them to the top and bottom   
   "hot" terminal on the gfi outlet, then feed the switches from both terminals   
   on the other side of the gfi? When I did this messing around with the   
   switches, everything worked properly. I just thought that the black wire was   
   always the constant power wire.   
      
      
   First off the disclaimer: The newer code requirement is for GFI outlets in   
   bathrooms to be 20-amp and also separate from the lighting circuit. So if   
   you wish to do it the correct way, you have to run a 20-amp line from the   
   panel.   
      
   If you wish to do it the way you're intending, then some simple re-splicing   
   is in order. First turn off the power, then take the white wire going to the   
   fan switch and pigtail 3 black wires to it. Leave the existing black wires   
   on each switch alone. Take the white wire off the switch for the vanity   
   light. Connect one of the black pigtail wires to each switch, (leaving one   
   for the moment.) Either up in the attic or behind the vanity light you're   
   going to find the main splice for the bathroom wiring. In this splice you   
   will have to take the white wire that ran to the vanity light switch off of   
   the hot wire splice and splice it to the neutral wires. This leaves you with   
   one black pigtail wire and one white neutral wire back at the switches. Once   
   power is restored, these 2 wires will supply power to the GFI. I'm sure you   
   can figure out that all of the grounds go together and to each device.   
      
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