>>None of those seem to have an earthing spike _and_ a neutral to GND link.
The top of page 20 shows something very similar to how houses are wired in the US (except that we have two hot wires running into the houses, whereas the diagram shows one) However it appears that the utility supplies the spiked earth safety ground rather than relying on the consumer to have proper wiring in the house (might be a better idea!) Not the jumper (labled Link) between the safety ground (PE) and the Neutral. It appears that is done just outside the house ?? In my house (very typical for rural houses in the US) I have a pole outside with a transformer on it that creates 240 volts with a center tap. (I have three phase voltage at 10,000+ volts running down our road on top of the poles. It feeds the entire northern part of our county, I was told. A high voltage substation is down the road that drops it from transmission line voltage to the distribution voltage for the county. ) The center tap is grounded via a bare copper conductor wire that runs down the pole into the ground. A two conductor alum cable - heavy 2/0 (I think), with a stranded conductor that is wrapped around the cable (They call it armored), and with a heavy plastic jacket on top of that runs underground to my basement where it enters a breaker box. There the stranded outer conductor is tied to the neutral buss bar and the two hot lines run into the main breaker. A stranded grounding conductor runs from the neutral buss bar to a water pipe or ground rod (its hidden from view). 20+ breakers distribute power, either 240 (line to line) or 120 (line to neutral) throughout the house. My house is all electric. Dave On 1/1/2016 6:43 PM, andy pugh wrote: > On 27 December 2015 at 00:32, John Kasunich <jmkasun...@fastmail.fm> wrote: >> Each house has a ground rod. The neutral from the transformer, the >> house ground rod, a connection from the house cold water plumbing (if >> copper), the neutrals from all the receptacles, and the ground wires from >> all the receptacles are all tied together at a large bus bar in the main >> panel. > > Something of a digression, but this document describes the earthing > systems legal for use in the UK > http://electrical.theiet.org/wiring-matters/16/earthing-questions.cfm > > None of those seem to have an earthing spike _and_ a neutral to GND link. > ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
