SC Lightning Protection Practice Questions - South Carolina Lightning Protection Systems Contractor Examination Exam

Why must copper and aluminum lightning-protection parts not be placed in direct contact?

They have identical electrochemical potentials, so the joint will freeze Galvanic corrosion will attack the aluminum (the less-noble metal) in the presence of moisture Copper cannot carry lightning current if aluminum is nearby Aluminum will become magnetic

Correct Answer:

Galvanic corrosion will attack the aluminum (the less-noble metal) in the presence of moisture

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