Is temporary contact of aluminum and copper wire permissible?
Hello. The question is stupid of course, but still I want to know the answer to it. Direct twisting of aluminum wires and copper is prohibited. There is a machine gun, simple Soviet, black one. An aluminum cable and a copper cable (without twisting. Just touch) go out from the terminal of the machine (for wiring around the room), the load in the room is small, a couple of outlets and a couple of lamps 100-150 W approximately. The question is: is contact between the various cables permissible in this case, at least temporarily (for the winter). The premises of the main garage are not heated, the maximum load is a household heat gun. Thank you for your attention.
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Hello! The point is that with direct contact of aluminum and copper, a galvanic pair is formed and redox reactions destroy the contact. Cover the copper core with a soldering iron or clamp the tip of the NShVI type with at least pliers - direct contact will already be excluded.