Forum Discussion
Cannon_George
Apr 13, 2015Explorer
Aluminum is considered less "noble" than steel, and if in direct contact with carbon steel will act as an anode, sacrificing itself in order to protect the steel (cathode). You eliminated the other potential cause (stray currents) by removing battery/shore power. The process is exacerbated by the presence of moisture, which helps act as a conductor.
I'm wondering do the steel jack legs show corrosion? Were they in contact with the ground, and exposed to water? If so, the aluminum may have been doing its best (as an anode) to protect the steel legs against corrosion.
I've heard of this happening to small aluminum boats in covered storage (in direct contact with steel storage racks) but never to a camper.
I'm wondering do the steel jack legs show corrosion? Were they in contact with the ground, and exposed to water? If so, the aluminum may have been doing its best (as an anode) to protect the steel legs against corrosion.
I've heard of this happening to small aluminum boats in covered storage (in direct contact with steel storage racks) but never to a camper.
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