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A ground rod electrode must be at least how long in contact with the earth?

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  1. 8 feet
  2. 4 feet
  3. 12 feet

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References

  1. EC&M: Code Q&A, Ground Rod Electrodes www.ecmweb.com/national-electrical-code/qa/article/20898150/code-qa-ground-rod-electrodes Checked 2026-10-10.

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