Q1: What is the standard temperature rating for high-temperature tray cables? A: Most high-temperature tray cables are rated for 90°C to 125°C continuous operation. Specialty products, like silicone or fluoropolymer-insulated cables, can be rated up to 150 to 200°C or even higher. 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 the cable tray cont d for instrumentation and control applications that require. cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned in this technical guide only apply to our own cable management ranges and cannot under any circumstances be transposed to si osure, overheating or. Environmental Factors: How hot or humid the air is, and how well air moves around, also affects how well cables cool down. In hot, damp, and still air, cables struggle to cool. When cables get too hot, several bad things can happen: Faster Aging: Heat makes the insulation inside cables wear out. Locating cable tray over a boiler or in close proximity to a large furnace can produce some rather high temperatures. It applies to cable trays made of steel, stainless steel, aluminum, or other metallic materials. This bulletin will help provide a few guidelines to consider when deciding which style to use.