Bonding Aluminum to Galvanized or steel

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tomradtke

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There is a new Bonding method for the WildBlue Satellite Dish. Doing so I have to install a dual aluminum ground lug to a steel mount bracket for a wall or roof mount, and install a dual aluminum ground lug to a galvanized pole for a pole mount. I am worried about a chemical reaction with the different metals. I was told that if I use stainless steel washers in between I shouldn?t have any problems. Please advise.
 
There is a new Bonding method for the WildBlue Satellite Dish. Doing so I have to install a dual aluminum ground lug to a steel mount bracket for a wall or roof mount, and install a dual aluminum ground lug to a galvanized pole for a pole mount. I am worried about a chemical reaction with the different metals. I was told that if I use stainless steel washers in between I shouldn’t have any problems. Please advise.

Galvanized+Al= OK, Stainless+Al=OK, Stainless+galvanized= galvanized will become the sacrificial anode and gets destroyed.
 
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