This part is used to isolate the bus bar which is installed in a Midnite Solar (PV) solar breaker panel. However it should work on any residential bus bar. -The OpenSCad file is included.  -The PV breaker box that I ordered shipped only with a grounding bus bar and not a (-)Negative feed bus bar. After cutting the 4" long ground bus-bar in half, one part of it was transformed into an isolated negative feed for the internal wiring. - Feel free to adjust the dimensions below, it is well commented to make it simple to do.  Edit the Open Scad file and change the OUPUT= value to switch between the design-view, or part-view in preparation to export the STL file.Printer: OrdBotRafts: NoSupports: NoResolution: 0.25Infill: 30%