I can see where you wouldn't want to get any building code enforcement related people involved in an issue like, for instance, running a bunch of individual strands of wire---some braided, some solid---through an undersized, underground conduit to add up to a single larger conductor. I might even be somewhat reluctant to ask that kind of question online---not because of paranoia about my local government, but for fear of being scolded and ridiculed by my peers. But the proper location of a GFCI appliance seems like something your local electrical inspector would be glad to tell you over the phone. I'd even be interested in finding out whether my local building department employed reasonable people and had realistic policies, or unreasonable people and unrealistic policies. If they told me that they couldn't even answer my question unless I had a permit to change a regular outlet to a GFCI, then I'd know, wouldn't I?