I am installing a sliding glass door, and the 220 line for my dryer runs right through the center of the opening I cut out. I will have to run the wire over the top of the door, but it is not long enough. How can I splice in about a 6-8ft length of wire? This line starts in the garage area , and to get to the dryer area is a long distance and would be almost impossible to replace the entire wire. This 220 line is ONLY for the dryer. Thanks