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Compatibility of Aluminum Wire With Copper Trailer Wiring

Question:

I have bunch of alum wire strandsd 12ga. Copper coated is this ok to use to wire small trailer with lights and electric brakes on one axle. Thanks

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Expert Reply:

You do not want to mix aluminum with copper like found in the trailer connectors like # 50-67-008 as well as the trailer lights and brake magnets. The dissimilar metals will cause galvanic corrosion and can cause wire failure. I recommend instead using # 12-1-1 and # 16-1-1 sold by the foot for your wiring needs.

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