I have tried to search the forum for the answer, with no luck. Can someone tell me what year(what edition) NEC started requiring a ground rod at the service entrance. I have replaced a few services at houses, most with 60 amp bases, that have no ground rod, or provisions for GEC in the base or the old edison fusebox. I had assumed that the rods weren't required at the time of the install, (late 60's early70's?). I was curious as to when the requirement was made. I would like to have this bit of information so I can try to inform a couple of home inspectors that think a GFCI and a ground rod has always been a requirement. Maybe time to dig out those old NEC copies?