sorry if this has been mentioned, but i just saw this thing at lowes. seems like a good device for us. i might get one.
http://www.lowes.com/pd_239794-4801...RL=?Ntt=appliance+voltage+detector&facetInfo=
http://www.lowes.com/pd_239794-4801...RL=?Ntt=appliance+voltage+detector&facetInfo=