Dereck, excellent thread with an enormous amount of information. I am reading the 2017 ARRL book by Ward Silver, N0AX, "Grounding and Bonding for the Radio Amateur." The thread has much more in advising on individual cases. There is some mention in the thread of RF tripping GFCIs (also called Ground Fault Interrupt of GFI). I am only running 100 watts to a G5RV, and I may be tripping some GFCI. I have three that just wont reset. I tested them with a ground and outlet tester, and two of them show an "open hot." I don't know if the GFCI socket is damaged and needs replacing. Would appreciate your advice. I would also like comments on the ARRL book. It's the first book of its kind, and it has a great deal of information that was not published before; or published in one place.