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Corroded Ground Rod Clamps
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- The clamp is typically made of galvanized steel, copper, or other conductive metal that can corrode over time when exposed to moisture and dirt.
- Corrosion causes the metal to oxidize and build up resistance, which reduces the effectiveness of the connection to ground.
- Visible signs of corrosion include green/white oxidization, pitting, flaking, cracking, or staining on the clamp surface and wires.
- Looseness, gaps, or high resistance can indicate the clamp contact area has corroded away and no longer makes consistent contact with ground rod.
- A severely corroded clamp may completely fail by falling apart when handled or may no longer conduct electricity safely to ground.
- Corroded clamps need to be repaired by thoroughly cleaning off oxidation.
- Reduce corrosion by re-tightening clamps, greasing threads, and recoating clamp surfaces.
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