These specialized trays are designed using non-combustible materials, often rated according to international standards such as UL 94 and IEC 60332. Fire resistance testing evaluates how well cable trays can withstand fire and prevent flames from spreading. This includes checking their flammability, smoke production, toxic gas emissions, and ability to block heat and fire. 230, Tray cables, one of a series of Standards issued by CSA Group under the Canadian Electrical Code, Part II. This Standard specifies requirements for single conductor and multi-conductor. Cable tray installation must comply with specific technical standards to ensure electrical safety, system reliability, and long-term maintainability.