Hot-dip galvanized steel is best for low-risk environments but should be avoided in areas with high fire hazard potential. Zinc melts at relatively low temperatures, which means that during a fire, the galvanized coating can fail quickly. Corrosive/High Humidity: Aluminum alloy or fiberglass-reinforced plastic trays. Corrosive/High Humidity:. In this guide, we'll compare composite vs galvanized cable trays, covering everything from material properties, corrosion resistance, fire performance, installation, cost, and real-world applications. Through these tests the aim was to learn more about thermal conductivity properties in fire conditions and what effects it would have on the tray itself and how long the installed cable. ucts; however, as an alternative DIN 4102-12 can be used. This is a test for electric cable systems that are required to maintain circuit integrity, so is therefore written around and is dependent on the cables themselves, but containmen of 90 minutes (the maximum time covered by DIN 4102-12).
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