Hello. I'm sorry for not being on lately. Life is kinda busy around here lately (an many of you well know!). Anyway, it'd be great to have the DW & GD on seperate circuilt, and really they should, but it would take a major rewiring of the house and the guy bought this house about a year and a half ago and is trying to "flip" it. He spaced off the GFCI's (because the final inspection was this past Friday), so the time frame is his fault. I'm trying to help him.
Let me try to see if I can explain this a little different. In the kitchen we have a sink with a window in front of it. About 2 feet to the left of the sink there's a switch/single receptacle combo. The switch feeds the light above the sink. About 2 feet to the right of the sink there's a switch/single receptacle device as well. The power for that one comes off the left box. The switch for the right device is for the disposal. And that's the feed for the DW. With having nothing connected to the right device, I hook up the ground wire, then the neutral wire. I have to pigtail the "hot" wire to the switch and to the "line" side of the GFCI. As soon as I touch the hot feed wire to the pigtail of the device, the GFCI trips. I took off the ground wire just to see what would happen and I get the same result. I had a simular situation a number of years ago, and when I took the ground wire off, the circuit held. I don't know if this because there's no separate ground bar or because the neutral is bonded to the box (which I thought is should be). My experience is mainly commercial/industrial, so that's why I'm kinda stumped on this. Thanks for the posts so far. I really appreciate your time if helping me figure this out. Any other thoughts and ideas would be greatly welcomed!!!