With patented piercing contact by Woertz, a pointed screw or knife pierces the insulation of a flat wire down to the wire strand. This pushes the stranded wires apart. The individual wires are mostly located at the screw or the knife surface, but the strand is not severed like with conventional contacting. The individual wires are stretched to produce contact pressure that facilitates power transmission between the wires and guarantees low resistance values. This kind of contact has the advantages of flexible assembly options and varied applications.