Marine Electrical Systems USCG Question #217 (Set 8)

What practice would be considered proper storage battery maintenance?

Official USCG Answer & Rule Citation

Correct Answer: Option C — applying petroleum jelly on connections to minimize corrosion

Applying petroleum jelly or specialized terminal grease prevents moisture ingress and sulfurous acid fumes from attacking metallic cable junctions, minimizing high-resistance galvanic corrosion per IEEE 45 maintenance guidelines.

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