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Elis [28]
4 years ago
14

A bare 4 AWG copper conductor Installed horizontally near the bottom or vertically, and within that portion of a concrete foun d

ation or footing that is In direct contact with the earth, can be used as a grounding electrode when the conductor is at least __________ft in length.
Physics
1 answer:
neonofarm [45]4 years ago
4 0

Answer:

20 ft

Explanation:

This is the length where the direct contact could be used as ground electrode

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3 years ago
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