ground rods can be installed in a varity of ways. However, the differences
in the installation can and usually do effect the usefulness of the rod. I
personally do not ever install one. I install them in pairs spaced a minimum
of the distance that they are long. It is possible to drive one or even two
rods in poor grounding conditions and not get the <25 ohms for a safety
Most of my grounding installations are considered "performance" < 5 ohms.
All of my installed ground systems are tested. Several ground systems are
tested several times a year. I live in the desert and grounding can be
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