How to convert a 300mm cable tray to a 200mm cable tray

Use a cable tray reducer or modify the tray with cutting tools to safely transition from 300mm to 200mm.Using a Cable Tray ReducerThe most straightforward method is to install a cable tray reducer, which is a fitting specifically designed to connect a larger tray to a smaller one. Reducers are available for light, medium, and heavy-duty trays and can accommodate widths from 50mm to 900mm, making them suitable for converting a 300mm tray to a 200mm tray . They are typically made from mild steel (pre-galvanized or hot-dip galvanized) or stainless steel, and can include closed or ventilated covers depending on your tray type . Reducers are available in left-hand or right-hand configurations, so you can match the orientation of your existing tray .Modifying the Tray DirectlyIf a reducer is not available or a custom solution is needed, you can cut and reshape the existing tray. For wire mesh or Flextray systems, follow these steps:Place the tray with the open side facing up and use a bolt cutter or airshear to cut the vertical wires to the desired width .Turn the tray to the side and repeat the cut for the other side.Ensure the edges are smooth and reinforced if necessary to maintain structural integrity.Attach the modified tray to the existing system using standard connectors and supports.ConsiderationsCable fill and ventilation: Ensure the reduced tray still meets NEC or IEC fill requirements to prevent overheating .Structural support: Verify that the tray and reducer can handle the weight of the cables after modification.Future expansion: Plan for potential cable additions; a reducer limits the usable width, so avoid overfilling. By using a standard reducer or carefully modifying the tray, you can safely convert a 300mm cable tray to a 200mm tray while maintaining compliance and structural integrity .