The utility model relates to an electric power device connection device, and especially provides a transition wire clamp connecting a six-bundled wire and a double-bundled wire. The transition wire clamp comprises a wire connection rack (1), a cover plate (2), a lower drainage plate (3) and a drainage wire clamp (4). The wire connection rack (1) and the cover plate (2) are fastened on the six-bundled wire. Two lower guiding positions of the wire connection rack (1) are fastened with the lower drainage plate (3). The drainage wire clamp (4) is installed on the lower drainage plate (3). The double-bundled wire is connected with the drainage wire clamp (4). The transition wire clamp solves the connection problem of transition from a six-bundled wire to a double-bundled wire, the cost is low, construction is simple and practical, and the working efficiency is raised.