Great replies, thank you. This is just one of many dilemas that I think we all have at one time or another. This is really a great site to go where there are thoughtful people with experience in the field. I probably will insist they install a dedicated circuit for the GFCI but it is tempting to call the inspector and ask as Roger suggested. These people do have some money but I got the impression from the HO that they would not do it if it were a big job. They might just call someone who will do it and I lose them as a customer. So be it. In this buisiness I am always thinking about my exposure to liability. It does bother me that there seems to be so many unlicensed, uninsured people(that probably don't pay taxes) doing the work. They are carefree when it comes to things like this since there really seems to be no enforcement or penalties for it. Sorry about the rant.