JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Cable Spacing This table compares cable spacing index values to determine the amount of space needs to be between two routed cables. Table 1. CABLE SPACING (needed) INDEX1 INDEX2 Spacing 1 1 0 1 4 18 2 3 6 3 1 6 3 6 18 4 2 12 5 3 12 6 5 6 Parent topic: Cable Tables