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Concrete and Copper wiring

Concrete and Copper wiring

Concrete and Copper wiring

The bare copper lightning protection conductor was installed down the side of a building into the concrete footing. Is it acceptable to incase a copper wire into concrete? Is concrete corrosive to copper?

RE: Concrete and Copper wiring

Copper is often embedded in concrete as part of the grounding system. Many large switchyards have components where the rebar must be grouted.


RE: Concrete and Copper wiring

According to ACI 222.3R, copper is chemically stable in concrete except when chlorides or ammonia are present. Air entraining agents can release small amounts of ammonia. A galvanic cell is created when copper is electrically connected to reinforcing steel in which the steel becomes anodic and corrodes in the presence of chlorides.

RE: Concrete and Copper wiring

in some countries copper wire is encased in spun concrete steel poles (i.e. for street lighting and power transmission) for earthing the steel reinforcement cage and the pole itself

RE: Concrete and Copper wiring

The word 'grouted' should be 'grounded' in my above post.


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