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Copper to Aluminum.........


Posted by doug seibert on April 23rd, 2003 10:34 PM
In reply to splicing copper to aluminum by David Masher on April 23rd, 2003 09:40 PM [Go to top of thread]

I've worked with alot of Aluminum in the past.........It takes special precautions.......some accepted methods of the "past" are now thought to be dangerous........(crimping connectors,Ideal#65).....

The best answer is to replace the wire in question with copper........OK so that's "not" an option..........You need ONE/TWO pair of connections to make the kitchen work.........

General Precautions: the wire is sized for the load....light load....in good shape (no previous burns/shorts/overloading) no sharp bends/kinks...........If needed Use a device rated AL (they have spurs under the screw head to grab the wire)

You sand lightly the AL wire w/220 grit........apply a NON-FLAMMABLE antioxidant......Pre-twist the copper and Aluminum wires clockwise....Trim to size........Use a 3M wire nut (special wire spring inside holds tighter than other brands).........Don't jam the wires in a small box.........don't place excess force or sharp bends in the wire............

And still you can't guarantee a 100% failure-free performance OVER TIME.............



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