What maintenance step helps prevent corrosion on connectors?

• A. Regular cleaning and application of appropriate contact lubricant; ensure dry contacts.
• B. Replace connectors monthly.
• C. Submerge connectors in oil.
• D. Paint the connectors with a protective coating.

Answer: (A)

Preventing corrosion on connectors starts with keeping the contact surfaces clean and protected from moisture and contaminants. Regular cleaning removes dirt, salts, and other residues that promote oxidation, while applying the right contact lubricant adds a thin protective film that resists moisture and reduces metal wear. This combination helps maintain a dry, clean contact surface and low resistance, which is essential for reliable electrical connection.

Other options miss the mark because they don’t address the root causes or can create new problems: replacing connectors on a fixed schedule wastes effort and doesn’t stop corrosion; submerging in oil can trap moisture and dirt and alter insulation and performance; painting or coating can insulate the contacts or attract contaminants and hinder proper contact.