More on concrete and....grounding [RE-wrenches]
Don Loweburg, Offline
i2p at aol.com
Thu Apr 24 20:49:56 PDT 2003
In a message dated 04/24/2003 8:09:26 PM Pacific Daylight Time,
allan at positiveenergysolar.com writes:
> Ufer
> ground, which is probably what the electrician was referring to. He may
> well
DRY SOIL IS ALSO A POOR CONDUCTOR. ITS THE MOISTURE THAT IS RESPONSIBLE FOR
THE GROUNDING. CONCRETE WILL ASSUME THE MOISTURE CONTENT OF THE SURROUNDING
SOIL, SO IN MY OPINION EUFER GROUND ARE OK. OFTEN THE EXTENSIVE SURFACE AREA
OF A CONCRETE SLAB OR FOUNDATION PROVIDES SUPERIOR CONDUCTANCE COMPARED TO
THAT OF A DRIVEN ROD, USUALLY WITH MUCH LESS TOTAL SURFACE AREA.
DON
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