in older homes the outlet box may be to shallow, just have a look, and
see:
http://www.landfield.com/faqs/electrical-wiring/part1/


k wrote:
Is is a simple swap-out to install gfi outlets? They've always been there,
but this place has none. I know the bathrooms need them, but how about the
kitchen and wet-bar? Anywhere else? Near the washing machine maybe?

thanks in advance,
Keith