Installation distance of galvanized cable tray hangers

The typical maximum distance between hangers for galvanized cable trays is 1.5 meters for horizontal runs and up to 2 meters for vertical runs, depending on tray type and load.Horizontal Hanger SpacingFor horizontal cable tray runs, hangers should generally be installed no more than 1.5 meters apart. This spacing ensures that the tray remains stable, prevents sagging, and distributes the weight of the cables evenly. Fixed supports are especially important at the start and end of the tray, at corners, T-junctions, and for spans longer than 30 meters to maintain structural integrity and safety .Vertical Hanger SpacingFor vertical cable tray runs, supports should be fixed to the building structure with a spacing preferably less than 2 meters. This helps maintain alignment, prevents excessive deflection, and ensures that cables remain properly supported throughout the vertical section .Key ConsiderationsTray Type and Load: Heavier trays or those carrying high-density cables may require closer hanger spacing to prevent bending or sagging.Material and Finish: Galvanized trays are corrosion-resistant, but proper support spacing is still critical to maintain mechanical stability over time .Special Points: Always provide additional supports at corners, junctions, and where trays change direction.Compliance: Installation should follow relevant standards such as the National Electrical Code (NEC) Article 392 in the USA or equivalent local regulations .SummaryHorizontal runs: Maximum 1.5 meters between hangersVertical runs: Preferably less than 2 meters between supportsCritical points: Start/end, corners, T-junctions, spans >30 metersAdjustments: Reduce spacing for heavier loads or longer spans Proper hanger spacing ensures structural stability, safety, and longevity of the cable tray system while facilitating maintenance and airflow for heat dissipation.