Electrolytic corrosion — Methods of evaluating insulating materials used in tropical service

The selection of insulating materials to guard against electrolytic corrosion has become increasingly important as the use of electric devices in the tropics has increased. Moisture conditions in the tropics are described, and means for producing such conditions in the laboratory are considered. The visual, corrosion-current, and water-extract conductivity methods for studying electrolytic corrosion are described. Typical results for a number of different materials are given.