Originally posted by Bill Addiss:
Do you get the "I Love Lucy" show over there?
(could you please 'splain'?)
Sure do. It comes around every so often for a re-run, along with Bilko, Star Trek, Happy Days, and the other old favorites. (Don't expect anyone here to have heard of "Gilligan's Island" thuugh.) Anyway, I shall 'splain' - Have to be English though because "Yo no hablo Espanol."
Longer earth rods were quite common in the past, and they're still available, but 4 ft. is pretty much the norm for residential services now.
The current IEE Regs. allow for an electrode resistance of up to 220 ohms. With PME and the old armor-earthed systems the ground-fault path is metallic. With a rod for grounding, there will almost always be a whole-house RCD (GFI).
I gather from some other posts that 8 ft. is standard there and the NEC specifies a maximum of 25 ohms. Correct?