Kiribanda
Electrical
- May 6, 2003
- 697
Hello members,
I had raised this question in electrical forum but was not lucky enough to get a solid answer.
In outdoor electrical substations the steel support structures (hot dipped galvanized) are bonded to the underground Copper ground grid (designed for safety & protection) using copper conductors. At some places where the soil is soft, these support structures are sitting on steel piles (screw piles) driven about 4-5m into the ground. To my knowledge this situation creates a corrosion cell where the two electrodes (copper & steel) are bonded together from outside using a wire and inside by the soil surrounding the copper grid and the steel pile.My question is, doesnot this arrangement corrode the steel support structure and subjected to a weight loss?
I had raised this question in electrical forum but was not lucky enough to get a solid answer.
In outdoor electrical substations the steel support structures (hot dipped galvanized) are bonded to the underground Copper ground grid (designed for safety & protection) using copper conductors. At some places where the soil is soft, these support structures are sitting on steel piles (screw piles) driven about 4-5m into the ground. To my knowledge this situation creates a corrosion cell where the two electrodes (copper & steel) are bonded together from outside using a wire and inside by the soil surrounding the copper grid and the steel pile.My question is, doesnot this arrangement corrode the steel support structure and subjected to a weight loss?
