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Ground Rods or Ground Clamps
The new version of EIA/TIA-222
specifies that copper wire SHALL NOT be used for ground wires,
ground rods or ground clamps. All new towers
installed under EIA/TIA-222 specifications must use
galvanized ground rods, galvanized steel wire (ie guy
wire!) for grounding conductors, and galvanized connectors or
exothermically welded connections. Tinned copper wire may be
substituted for galvanized steel wire when the conductor
must be buried. Bare coppers no longer allowed in any
grounding application, either at the tower base or at the
guy anchors.
This change came about as a result of research
that demonstrated that copper ground rods in proximity to
tower foundations and steel guy anchors tended to
accelerate the corrosion of the steel members, leading to sudden
catastrophic failure.
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