Applies to materials, construction, and performance of copper bonded and hot dipped galvanized, zinc electroplated, stainless steel, and chemical ground rod electrodes. Ground rod Electrodes and ground rod Electrode couplings that function in accordance with the American National Standard National Electrical Code(NFPA 70-1997). This standards' publication also includes information for products Electrode that have been successfully used for many years but not defined within the American National Standard National Electrical Code (NFPA 70-1997). The items described in this Standards Publication are defined in Section 1.