Verticality deviation ≤ 3 mm per meter, total deviation ≤ 10 mm. The contact surface between support and tray shall have paint removed to ensure electrical continuity. Expansion joint installation:. in this document have been tested extens ompetent professional 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. us-trations without notice. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned. Personal injury as well as property damage will result if proper installation and maintenance procedures are not adhered to. Qualified field personnel working to a pre-determined layout plan will save considerable installation time. Per the Canadian Electrical Code (CEC) a qualified person is one. The National Electrical Manufacturers Association (NEMA) Standards and guideline publications, of which the document herein is one, are developed through a voluntary Standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in. Article Summary: A compliant cable tray installation requires a thorough understanding of NEC Article 392, proper structural support, and precise installation techniques.
