How to find the right angle for cable trays

Right angles on cable trays can be achieved using elbow joints, calculated cut-outs, or software settings to ensure precise 90° bends.

Using Elbow Joints

One of the simplest ways to create a 90° turn in a cable tray is by using elbow joints. These joints are inserted into the tray and secured with screws, allowing horizontal or vertical orientation changes from -90° to +90°. This method is quick, reliable, and commonly used in both industrial and commercial installations.

Calculating Cut-

Out Sections

For custom bends, you can calculate the size of the cut-out section needed to form a right angle. The general approach involves dividing the tray width by a factor derived from the desired angle. For a 90° bend in a 600mm wide tray, you can make two 45° cuts (each 300mm) or three 30° cuts (each 200mm) to achieve the total 90° turn.

This method allows for smooth, sweeping bends without sharp corners.

Software-

Assisted Angle Settings

If you are designing cable tray layouts in software like Revit, you can specify fitting angles in the Electrical Settings dialog. You can set angle increments or specific angles, ensuring that the software automatically applies precise 90° bends when adding or modifying trays. This is particularly useful for complex layouts or when multiple trays need consistent angles.

Practical Tips

Always measure and mark the tray before cutting or bending to avoid errors. For long runs, consider gradual bends using multiple smaller angles to reduce stress on cables. Verify the bend with a protractor or angle finder to ensure accuracy.

When using elbow joints, ensure they are compatible with the tray size and material. By combining these methods—elbow joints, calculated cut-outs, and software settings—you can reliably create and verify right angles in cable tray installations, ensuring both functional and safe cable management.