How long will the earth loops last?
Copper is one of the few metals that exist naturally as an element in the earth. A noble metal, it naturally resists corrosion in most underground environments because of the protective film that forms naturally on its surface. In rare exceptions where pH readings exceed safe levels, cathodic protection for the in-ground copper is offered by ETI. With some installations dating back to 1980, ETI has never experienced a field failure of a production earth loop due to corrosion.
