This set of tests is to verify the ability of cable trays and their accessories to withstand certain weather and atmospheric conditions during the time the installation is in service. They are only applicable to compound or metallic materials.
The test method is based on checking the resistance to corrosion of the tray and accessories according to the rating of the materials defined in the standard. There are basically two procedures:
• ISO 2178/2808 Standard: This permits determining the thickness of the zinc coating covering the stainless steel the tray is made from, and its resistance to corrosion, based on the ratings defined in the standard.
• Neutral saline mist according to ISO 9227 in the case of alloy trays other than stainless steel and the rating defined in the standard.