Cable trays, whether solid bottom or ventilated, provide similar benefits as wire mesh basket trays but often offer a more protective barrier for cables. Like wire mesh baskets, cable trays from coated steel, aluminium, or stainless steel can handle harsh outdoor environments. Our engineer's guide helps you choose the right outdoor cable tray based on environment, load, and corrosion resistance. Select HDG, Aluminum, or FRP with confidence. They are approved for supporting various types of circuits, including service conductors, feeders, branch circuits, communications circuits, control circuits, and. Improperly secured covers on outdoor cable trays can cause a serious hazard in harsh environment conditions such as wind, snow, and ice. They can endure harsh weather conditions, such as rain, snow, wind, and extreme temperatures, guaranteeing that electrical installations stay safe and reliable. NewReach's outdoor cable. en completely installed, without damage either to conductors or structural system use 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. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when.