Cable trays are sized with a 30–40% growth factor and routed for easy access to termination points. I maintain minimum bend radii for power and control, separate high-power from data, and leave slack for future equipment. Penetrations are sleeved and sealed. It provides a safe, organized, and professional way to route electrical cables inside elevator shafts and machine rooms. This PVC cable tray ensures excellent protection. Cable trays support cable across open spans in the same manner that roadway bridges support traffic. Cable trays are a part of a planned cable management system to support, route, protect and. I think a state inspector would consider this a trip hazard for your disconnect, they should have run conduit from the top of the disconnect to the ceiling and down to the controller and then changed over to flex or seal tight flex within a foot or two of the controller for movement. At least the. Each car, machine room and hoistway pit must have separate dedicated branch circuits for lighting, receptacles and HVAC, with car and machine-room lighting exempt from GFCI while required for receptacles. This section will guide you through the necessary steps to ensure a successful installation.