nternal corrosion of the distribution line can be detected in order to develop techniques ofnon-destructive inspection methods that operate only on the metal track eddy current diagnosis ispossible by applying the technique investigated. Sensor for the production of a finite element methodmodeled by using an eddy current sensor, a distribution line by using an accelerated aging samples ofsodium hydroxide was prepared. Sheathed cables for internal corrosion studies detected using an eddycurrent sensor is considered to be possible.