i posted a message like the following last nite or so i thot but it doesn't show today. would someone please explain as to how the neutral is really supposed to work. that might explain why i had a problem with a house i am rewiring. 3 ways were used for both ends of kitchen. 14/2 was used as travelers, not 14/3 that i am used to. a neutral from a different ckt was run to kit ceiling lt. this worked fine until i replaced 2 slot receptacles on ckt with grounded receptacles. placed a gfi at first receptacle. when either of 3 ways in kitchen were flipped, gfi would trip. why would gfi trip? ckt worked fine before i placed gfi at first receptacle.