The WinterGard power connection kit is for use only with the following WinterGard heating cables: H311, H611, H612, H621, and H622. Materials for one power connection and one end seal are included. All WinterGard heating cables are designed for water-pipe freeze protection applications. Only the H612 and H622 cables can be used for both pipe freeze protection and roof and gutter de-icing applications. Do not use this kit with aluminum feed wires.