|  | 9.6 | Basics of Wiring Closets and Patch Panels
| 9.6.6 | Punch tools
The patch panel type determines whether you use a 110 punch tool or a Krone punch tool. The panel depicted in the graphics in this lesson is a 110. Check to see which one you will need before you begin work. A punch tool has spring-loaded actions. This allows it to perform two functions at the same time. As it pushes the wire between two metal pins, and skins the sheath from the wire (so that it can make an electrical connection with the pins) the punch tool's blade also cuts off any extra wire. Occasionally the punch tool may fail to make a clean cut. When this happens, twist the cut ends of the wires gently, then remove them after they have been punched. When you use the punch tool, be sure to position it so that the blade faces away from where the wire enters each pin location. If you fail to take this precaution, you may cut the wire so that it falls short of its electrical connection point.
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