Dig-In Tests on Sodium Conductor Cables

Two sets of dig-in tests on sodium conductor, polyethylene thylene insulated cables were made by the Commonwealth Edison Company. The first series of tests was made on de-energized 15-kV and 600-volt cables using both power machinery and hand tools. About one year later, a second series of dig-in tests was made on 600-volt cables energized at 120/240 alternating volts, using three types of power machinery.