This AutoCAD DWG file provides a comprehensive cable tray installation plan, featuring detailed support rod, duct, and expansion joint specifications. For licensed electricians, mastering these principles is essential. We have more than a decade's worth of experience making and designing quality cable tray and cable management systems. NEMA VE2 was developed by the NEMA Cable Tray Section, of which MP Husky is a charter member. Proper planning for installing cable tray includes calculations based on loading, support. maintain spacing or to keep cables in place when the tray is ect the minimum bend ra-dius for cables as they exit the bottom of the cable tray.